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THE PACKING LIST — 2 Months, One Bag, South America

For: First international trip ever. One-way ticket, flight ~July 15 2026. Hostel-hopping with an Osprey. Southern-hemisphere WINTER in the south (Patagonia, Mendoza, the Andes, Uyuni at ~12,000 ft = genuinely cold) → warm/tropical as you climb north (Bolivian lowlands, Amazon, Peru coast, Ecuador, Colombia, the Caribbean). You pack for BOTH in one bag.

The golden rule: if you can buy it cheap on the road, don't carry it. Everything down south sells fleece, alpaca sweaters, gloves, and socks for a few dollars in any market. Pack light, buy warmth locally if you're cold.

THE ONE-BAG STRATEGY (read this first)

  • Carry-on only mindset, even with a checked-size pack. Aim to keep the whole kit under ~10 kg (22 lb). A first-timer's #1 mistake is overpacking; you will be hauling this up hostel stairs, onto night buses, and across borders for 60 days.
  • Your Osprey is the bag. If it's an Osprey Farpoint/Fairview 40 or 55, it has a stowable harness and often a detachable daypack — perfect. If it's a top-loader (Atmos/Aether), get a packing-cube system so you're not dumping the whole bag to find one sock.
  • Laundry every ~5–7 days (hostels and lavanderías do wash-dry-fold by the kilo, ~$2–5/load). So you pack ~1 week of clothes, not 2 months.
  • Layers beat bulk. Three thin layers you can mix = warm in Patagonia, just the base = fine in the Amazon. One giant winter coat = dead weight for the northern 75% of the trip.

CLOTHING (layered: winter-south + tropical-north)

Base layers (the system)

  • 2 merino wool t-shirts — merino resists stink for days, dries fast, works as a base layer in the cold AND a tee in the heat. The single best fabric for one-bag travel.
  • 3–4 regular t-shirts / tanks (synthetic or cotton-blend; cheap to replace).
  • 1 merino or synthetic long-sleeve base layer top (Andes / night buses).
  • 1 thermal base layer bottom (leggings/long johns) — Uyuni salt-flat sunrise, El Alto/La Paz, Patagonia-edge cold. Packs to nothing.

Mid layers

  • 1 light fleece or merino hoodie — your everyday warm layer.
  • 1 packable down or synthetic puffy jacket — compresses into its own pocket, the MVP for cold-south and freezing night buses. Buy synthetic if you'll get it wet (Amazon/waterfalls); down if you want max warmth-to-weight.

Outer layer

  • 1 packable rain shell (waterproof, hooded) — doubles as wind layer. You WILL get rained on in Iguazú, the cloud forest, and the Amazon. A shell
    • puffy + base = a real winter system without a bulky coat.

Bottoms

  • 1 pair quick-dry travel/hiking pants (zip-offs are dorky but genuinely useful here — pants in the cold south, shorts in the hot north).
  • 1 pair jeans or durable casual pants (going out, looking presentable at borders/airports).
  • 2 pairs shorts / swim-capable shorts.
  • 1 swimsuit / board shorts — beaches, hot springs (Atacama, Baños in Ecuador), hostel pools, waterfall swims.

Underwear / socks

  • 6–7 pairs underwear (merino or quick-dry; rinse-in-sink capable).
  • 2 pairs wool hiking socks + 3–4 pairs regular socks. Wool socks save your feet in the cold and on treks. You'll buy more alpaca socks in Peru/ Bolivia for ~$2 — they make great cheap warmth.

Warm extras (or buy on arrival down south)

  • 1 beanie + 1 buff/neck gaiter (buff = hat, scarf, dust mask, eye cover, sweatband — the most versatile single item you'll own).
  • 1 pair light gloves. Markets in Mendoza/La Paz/Cusco sell alpaca beanies and gloves dirt cheap — totally fine to buy there instead of packing.

Footwear (max THREE pairs — they eat space)

  • 1 pair trail runners / light hiking shoes — your daily driver; handles cities, treks, and the salt flat.
  • 1 pair sneakers OR comfortable walking shoes for going out.
  • Flip-flops / sandals — see the "never think of" section (they're for the showers as much as the beach).

Modesty note for churches/some interiors: one set of "covered" clothing (long pants + a shirt with sleeves) gets you into cathedrals and is respectful in rural Andean towns.

ELECTRONICS

  • Phone (your camera, map, translator, ride-app, bank, boarding pass — the single most important object you carry).
  • Power bank, 10,000–20,000 mAh — night buses, full travel days, the salt-flat tour with no outlets. Non-negotiable. (Keep it in your CARRY-ON, never checked — lithium batteries are banned from checked luggage.)
  • Universal travel adapter with USB ports. Argentina/Uruguay use Type C & I; Bolivia/Peru/Ecuador/Colombia use Type A & C; Chile uses C & L. A single universal adapter covers the whole route. Most of the continent is 220–240V (Colombia/Ecuador are 110–120V) — your USB chargers are dual-voltage, but check any hair tools.
  • 2 charging cables + a wall block (one long cable is gold when the only outlet is across the room — a documented hostel annoyance).
  • Headphones (earbuds + ideally cheap over-ears for buses).
  • Kindle / e-reader — see "never think of." Worth its own line.
  • Optional: GoPro/action cam (salt flat, waterfalls, Amazon), a tiny tripod/phone clamp for the famous Uyuni perspective shots.
  • Do NOT bring: laptop unless you truly need it (theft target + dead weight), expensive jewelry, anything you'd cry over losing.

TOILETRIES

  • Travel-size everything (refill on the road; full bottles are heavy and big bottles can't fly carry-on).
  • Toothbrush + travel toothpaste, floss (doubles as emergency thread/cord).
  • Deodorant, biodegradable soap/shampoo bar (bars don't count as liquids and don't leak).
  • Sunscreen SPF 30–50 — the Andes and salt flat sun is brutal at altitude; it's expensive and hard to find good stuff locally, so bring it.
  • Lip balm with SPF (altitude + wind destroys lips).
  • Heavy-duty moisturizer (high-altitude air is bone dry).
  • Strong DEET or picaridin insect repellent — essential for the Amazon and the Iguazú/jungle zones; bring a good one, local stuff is weak.
  • Razor, nail clippers (clippers go in CHECKED if flying carry-on-only), any personal hygiene items.
  • Small quick-dry microfiber towel (see "never think of").
  • Hand sanitizer + a small pack of tissues (many public/bus bathrooms have neither toilet paper nor soap).

DOCUMENTS (and the all-important copies)

  • Passport — must be valid 6+ months beyond travel and have blank pages. This is your single most important possession.
  • Onward/return ticket proof. ⚠️ You have a ONE-WAY ticket. Several South American countries (and the airline at check-in) can demand proof of onward travel. Carry a printed/PDF plan, or buy a cheap refundable/throwaway onward ticket before you fly. Don't get denied boarding on day one.
  • Travel insurance policy (with a printed emergency number — get insurance that covers adventure activities and medical evac; the Amazon and high Andes are remote).
  • Vaccination records, including Yellow Fever certificate — required or strongly recommended for the Amazon basin and required for entry to some countries if arriving from a yellow-fever zone. Get the shot well before you fly and carry the yellow card.
  • 2+ printed passport photos (for visas/permits/SIM registration).
  • Credit card + debit card from at least 2 different banks/networks (if one gets eaten, frozen, or skimmed, you're not stranded). Tell your banks you're traveling.
  • ~$200 USD cash in clean, unmarked bills as emergency backstop — USD is widely exchangeable; torn/marked bills get rejected.
  • Driver's license (ID backup; sometimes accepted for rentals/age checks).

The copies checklist (do ALL THREE forms)

  1. Photocopies (paper): passport photo page, both cards (front/back), insurance, vaccine card, onward ticket. Keep separate from the originals.
  2. Digital copies: photograph everything → store in your email + a cloud folder + your phone's offline files. Email a copy to yourself and to a parent.
  3. A trusted person at home has copies and your rough itinerary.

Carry the passing-around stuff as a colour copy of your passport for hostel check-ins and police checks; keep the real passport locked up.

HEALTH / MED KIT

Build a compact kit — pharmacies exist everywhere but you don't want to hunt for Imodium at 3am in a bus station.

  • Imodium (loperamide) — traveler's diarrhea is near-inevitable; this is the item people are most grateful they packed.
  • Oral rehydration salts / electrolyte packets — for the above, for heat, and for altitude. Bring a stash; cheap and tiny.
  • Altitude meds. Uyuni (~3,650 m), La Paz/El Alto (~3,640–4,150 m), Cusco (~3,400 m) are SERIOUSLY high. Ask your doctor before you fly about acetazolamide (Diamox) — typical prevention is 125 mg every 12h starting ~1 day before ascent; it's prescription-only, so sort it at home. Local Sorojchi pills and coca tea/leaves help symptoms but aren't a substitute for staged ascent. (Best non-drug move: don't fly straight to the highest point — ascend gradually and take it easy day one.)
  • Ibuprofen / acetaminophen (pain, altitude headache, fever).
  • Antihistamine (allergies, bites, mild reactions).
  • Broad-spectrum antibiotic (e.g., a course for traveler's diarrhea) — ask your travel-medicine doctor to prescribe one to carry.
  • Blister care — Compeed/moleskin + a few band-aids. You'll walk a LOT.
  • Antiseptic wipes + a small tube of antibiotic ointment + a few gauze pads.
  • Motion-sickness pills (the mountain bus roads in Bolivia/Peru are winding).
  • Any personal prescriptions — bring the full trip's supply in original labeled bottles + a copy of the prescription.
  • Malaria prophylaxis if your doctor recommends it for the Amazon leg.
  • Hand sanitizer, a thermometer (tiny), tweezers (splinters/ticks).

Pre-trip medical (do BEFORE July)

  • Visit a travel clinic 6–8 weeks before departure. Likely shots: Yellow Fever (Amazon), Hepatitis A & B, Typhoid, Tetanus booster, and routine vaccines up to date. Discuss rabies and malaria for jungle areas. Confirm current requirements for your exact route at the clinic and on official government pages.

🎒 THINGS YOU'D NEVER THINK OF (the standout section)

This is the stuff that separates a smooth first trip from a rough one. Nobody tells you about half of these until it's too late.

Security / sleep (hostel life)

  • Combination padlock (and a second small one). Hostel lockers almost never come with a lock — you supply your own. A 4-digit combo padlock means no key to lose. Get one with a shackle long enough for locker latches AND your bag zippers.
  • Rubber doorstop. Wedge it under your private-room door at night — instant extra security in places where the door lock is sketchy or doesn't fully latch. Tiny, weightless, huge peace of mind. (A widely recommended SA item, especially for solo travelers.)
  • Earplugs (several pairs) + eye mask. Dorms are loud, lights flick on at all hours, and night buses are bright and noisy. This is the difference between sleeping and not. Pack foam earplugs and keep a pair in your pocket.
  • Headlamp (with a red-light mode). Find your bunk, dig through your bag, or hike a pre-dawn trail without blinding your dorm-mates or fumbling your phone. Hands-free beats a phone flashlight every time.
  • Sleep sheet / sleeping-bag liner (silk or poly). A clean barrier between you and questionable hostel bedding; adds warmth on cold nights and on buses. Packs tiny.
  • Decoy wallet. A cheap old wallet with a few small bills and an expired/ dummy card. If you're mugged, you hand this over and keep your real cards and cash hidden. A real, recommended tactic in higher-risk cities.
  • Money belt or hidden neck pouch. Worn under your clothes for passport + emergency cash + spare card on travel days and in crowds. Pickpocketing (not violent crime) is the #1 tourist risk across the continent — keep the important stuff off your visible pockets and daypack.

Water / health (route-specific)

  • Water purification — DON'T drink the tap water in most of the continent. Best single buy: a Grayl GeoPress (press-to-purify bottle that removes viruses too, not just bacteria/protozoa — viruses matter in developing regions) so you fill from any tap and stop buying plastic bottles. Lighter/ cheaper alternatives: a SteriPen (UV; needs clear water) or purification tablets as a backup that weighs nothing. A plain LifeStraw filters bacteria/protozoa but not viruses — fine for streams, less ideal for sketchy city tap. Carry tablets as backup regardless.
  • Electrolyte packets (also under Health) — drop one in your purified water for altitude, heat, hangovers, and post-Imodium recovery.

Gear / utility (MacGyver kit)

  • Quick-dry microfiber towel. Many hostels don't provide towels (or charge for them) and a cotton towel never dries in a humid dorm. This is essential, not optional.
  • Packing cubes. Turn a chaotic backpack into drawers; compress clothes; find things without exploding your bag in a 6-bed dorm. Genuinely trip-changing for one-bag living.
  • Carabiner (a couple). Clip flip-flops/wet shoes to the outside of your pack, attach a water bottle, secure your bag zippers together, hang wet laundry. Endlessly useful.
  • Packable dry bag (10–20L). Keeps electronics/passport dry in the Amazon, on boat transfers, at waterfalls, and on rainy bus-roof luggage days. Doubles as a laundry/wet-clothes bag.
  • Small combination cable lock. Loops your backpack to a bus luggage rack, a hostel bed frame, or a café chair so it can't walk off while you nap or eat.
  • Duct tape wrapped around a pencil/old card. A few feet of duct tape weighs nothing and fixes everything: ripped bag, broken sandal, sealing a package, blister patch in a pinch, covering a window gap for sleep.
  • Zip-ties (a handful). Secure zippers as a tamper indicator, repair gear, rig a clothesline, lock a locker hasp. Weightless.
  • Spork (titanium or plastic). Street-market food, hostel-kitchen meals, overnight-bus snacks — eat anything without hunting for cutlery.
  • Travel clothesline + universal sink plug (many hostel sinks lack a stopper)
    • a little laundry soap — wash underwear/socks in the sink between laundry days. The sink plug is a classic "why didn't I have this" item.
  • Flip-flops / shower sandals. Wear these in EVERY hostel shower — shared showers are a foot-fungus / verruca lottery. Also your beach + walk-to-the- bathroom + airport-security shoe. (Yes, also listed under footwear — but their #1 job is the grimy shower.)
  • Kindle / e-reader. Long bus rides (10–20h overnighters are normal here), flight delays, hammock afternoons. Hundreds of books, lighter than one paperback, battery lasts weeks. A first-timer underrates how much waiting travel involves.

Random-but-clutch

  • A few ziplock freezer bags — waterproof your phone/docs, bag wet swimsuits, organize cables, store leftover food.
  • A reusable tote / packable daypack — markets, groceries, day trips when you leave the big bag at the hostel.
  • Pen (you'll fill out arrival/customs cards on the plane — borrowing one is a hassle, and a pen is sometimes confiscated/unavailable).
  • Small first-aid of cash sense: keep small bills separated in 2–3 spots on your body/bag so you never flash a fat wad to pay for a $1 empanada.
  • Offline tools on your phone: download Google Maps offline for each city, Google Translate Spanish offline pack, and your accommodation addresses. Spanish is the lifeline language for nearly your whole route.

✈️ CARRY-ON ESSENTIALS (survive if the checked bag is lost)

Assume your big bag could get lost or delayed for 2–3 days. Everything here goes in the bag that never leaves your body/sight:

  • Passport + onward-ticket proof + insurance + vaccine (yellow) card.
  • All cards + emergency USD cash + your money belt/neck pouch.
  • Phone + power bank + charging cable + adapter. (Power bank MUST be carry-on — banned in checked luggage.)
  • One full change of clothes + clean underwear + the merino tee (so you can function/sleep one day).
  • The med kit (prescriptions, altitude meds, Imodium) + toothbrush + travel toothpaste + deodorant.
  • Glasses/contacts + any medication you can't skip a day of.
  • Photocopies + digital copies of all documents.
  • Kindle / earphones / eye mask / earplugs (you may sleep in transit).
  • Pen (customs forms) and a printed copy of your first hostel address.

If the airline loses your pack: you have ID, money, meds, clean clothes, and your phone. You're inconvenienced, not stranded. That's the whole point.

QUICK PRE-FLIGHT CHECKLIST (the week before)

  • Passport valid 6+ months, blank pages? Onward-ticket proof ready?
  • Travel clinic done; Yellow Fever card + meds in hand?
  • Travel insurance bought (covers adventure + medical evac)?
  • Banks notified; 2 cards from 2 networks; PINs memorized?
  • Phone unlocked for a local SIM/eSIM; offline maps + translate downloaded?
  • All documents copied 3 ways (paper / digital / person-at-home)?
  • Bag weighed — under ~10 kg? If not, take stuff OUT.
  • Power bank + meds + valuables in the CARRY-ON, not checked?

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