Japan is one of the best countries in the world to buy functional clothing. The strategy: pack minimal, buy what you need on arrival, wash every 4–5 days, wear it out. Both houses have washing machines. Merino wool is the backbone - odor-resistant, quick-dry, temperature-regulating across cool mornings and warm afternoons.
See Carry-on Strategy for the full packing framework. This page covers what to buy and where.
April Weather - What You’re Dressing For
- Mornings: 10–15°C (50–59°F) - cool; layers required
- Afternoons: 17–22°C (63–72°F) - shirt + light layer
- Rain: Possible any day; a packable rain layer is essential
- Walking: 15,000–25,000 steps on active days - footwear is the most important decision
The layering system that works: merino base → mid-layer (light fleece or down) → rain shell. All three can be bought in Japan at better prices than most Western equivalents.
Down allergy: Jeannette is allergic to down; Ana possibly as well. Down insulation (Uniqlo Ultra Light Down, Montbell Plasma 1000) is fine for Jeff and Matt only. Jeannette and Ana need synthetic insulation alternatives — see notes throughout.
Sizing - Read This First
Japanese clothing runs smaller than US/EU. General mapping:
| US Size | Japan Size |
|---|---|
| S | M |
| M | L |
| L | XL |
| XL | XXL |
Pants sizing is in cm (waist). US 32 = 81 cm, US 34 = 86 cm. Uniqlo and Muji carry extended sizes in flagship stores - not always in smaller branches. If you’re between sizes, try both; Japan sizing tends to be slim-cut.
Shoes: Japanese shoe sizing is in cm (your foot length). US Men’s 10 = 28 cm, US Men’s 11 = 29 cm, US Women’s 8 = 25 cm, US Women’s 9 = 26 cm. Wide-width options are limited - bring any specialty footwear from home.
Brands by Category
Uniqlo (ユニクロ) - Everyday Baseline
Japan’s most useful clothing store for travelers. Quality-to-price ratio is exceptional. The flagship stores have everything; smaller branches carry less.
Best buys:
- Merino wool sweaters - ¥3,000–5,000; excellent quality, multiple weights. Wear 2–3 days between washes.
- HeatTech (thermal base layer) - ¥1,500–2,000; surprisingly warm for the weight; good under a merino for cold morning photography starts
- Ultra Light Down jacket - ¥5,000–8,000; packs into its own pocket to palm-size; legitimate 800-fill warmth; the single best space-to-warmth purchase in Japan — Jeff and Matt only (down allergy)
- Uniqlo Pufftech jacket (synthetic insulation) - ¥3,000–5,000; Uniqlo’s down-free insulated jacket; similar packability, slightly less warmth-to-weight; Jeannette and Ana’s alternative to the Ultra Light Down
- AIRism (moisture-wicking base layer) - ¥1,500; for warmer afternoon activity
- Kando pants / Smart Ankle Pants - travel-friendly, look casual but pack flat; good replacement for jeans for walking days
- Packable windbreaker - ¥3,000–5,000; lightweight rain/wind layer option at the lower end of budget
Flagship stores on the trip:
- Uniqlo Ginza (Tokyo) - 12 floors, most complete collection in Japan; men’s, women’s, limited editions, full size range
- Uniqlo Shinjuku - large store, good for extended sizes
- Osaka: multiple Shinsaibashi locations, Namba walk-in
Muji (無印良品) - Merino + Travel-Specific Line
Muji’s merino wool is arguably better than Uniqlo’s - more natural feel, more color options, slightly higher price. Their dedicated travel line is designed specifically for pack-light travelers.
Best buys:
- Merino wool base layers and sweaters - ¥3,000–7,000; full range of weights including ultra-fine for layering
- Merino wool socks - ¥1,200–1,800; excellent for multi-day wear
- Travel stretch pants - anti-wrinkle, quick-dry, packable; good for transit days
- Walking sandals / simple shoes - Muji makes clean, comfortable everyday shoes; not technical but solid for casual days
- Travel pouches and organizers - Muji’s packing accessories are excellent (not clothing but worth noting)
Flagship stores:
- Muji Yurakucho (Tokyo, near Ginza) - largest Muji in Japan; all lines fully stocked including travel-specific items
- Grand Front Osaka: large location, good stock
Montbell (モンベル) - Outdoor / Technical
Japan’s best outdoor brand. Comparable quality to Arc’teryx and Patagonia at significantly lower prices. Designed for Japanese conditions - which means technical performance in variable mountain weather.
Best buys:
- Rain shells (Versalite jacket) - ¥15,000–20,000; waterproof, breathable, packs very small; lighter than most Western equivalents
- Base layers - merino and synthetic options; technical quality for hiking days
- Insulation (Plasma 1000) - ultralight down; their premium option competes with Western technical brands at a fraction of the cost — Jeff and Matt only (down allergy)
- Montbell Thermawrap (synthetic insulation) - packable synthetic jacket; the Plasma 1000 alternative for Jeannette/Ana if Montbell is visited
- Hiking socks - among the best available anywhere for technical comfort
Who it’s for: Matt (day hikes - Fujisan, Takao, Nikko); Jeff (photography in rain or cold mornings). Also the right call for anyone wanting a durable packable rain layer to last beyond the trip.
Locations:
- Shinjuku (Tokyo) - main urban store; accessible on most days
- Multiple Tokyo locations; Osaka (Umeda area)
Matt - Day Hike Kit
Matt has three hike-level days (Fujisan, Takao, Nikko/Fuji weather decision). The layering system needs to function on exposed ridgelines and in variable mountain weather, not just city walking. Buy in Japan — Montbell is the primary source.
Rain shell — non-negotiable:
- Montbell Versalite jacket - ¥15,000–20,000; waterproof, breathable, packs to fist-size; lighter than most Western equivalents. Buy this first.
Insulation:
- Montbell Plasma 1000 down jacket - ¥20,000–30,000; ultralight premium option; competitive with Western technical brands at half the cost — Matt only (down allergy)
- Uniqlo Ultra Light Down - ¥5,000–8,000; not technical-grade but fine for Takao and Nikko — Jeff and Matt only (down allergy)
Base layers:
- Montbell Merino Wool base layer (top) - ¥5,000–8,000; technical merino, odor-resistant, temperature-regulating; works on and off trail
- Montbell ZEO-LINE tights (bottom) - ¥4,000–7,000; synthetic, quick-dry, thermal; better for sustained output than cotton or denim
- Uniqlo HeatTech is an acceptable urban alternative but doesn’t manage sweat well on climbing grades
Mid layer:
- Montbell trail fleece - ¥6,000–10,000; packable, breathable; better than cotton hoodies for sustained elevation gain
Hiking pants:
- Montbell Trail Action Pants - ¥8,000–12,000; stretch, water-resistant, articulated for climbing; the right choice for Fuji and Nikko
- Uniqlo Kando pants - adequate for Takao (easier terrain); not appropriate for Fuji summit attempt
Socks:
- Montbell Merino Wool Trekking socks - ¥2,000–2,500; multi-day wear, blister prevention; buy 2–3 pairs early
Fuji-specific additions (if summit attempt):
- Gloves (thin liner gloves — Montbell or 100-yen shop)
- Buff/neck gaiter — summit can be below freezing even in April
- Sun protection is critical above treeline; Japan pharmacy sunscreen works
Where to buy: Montbell Shinjuku is the primary source — plan a dedicated stop in the first day or two in Tokyo. Grand Front Osaka (Montbell Umeda) is a fallback if something critical is missing before a day hike surfaces early in the trip.
Workman Plus (ワークマンプラス) - Performance at Extraordinary Value
Japan’s workwear brand expanded into outdoor/performance clothing. The pricing seems like a mistake: waterproof jackets ¥1,000–3,000, thermal base layers ¥1,000, insulated vests ¥2,000. Quality is solid - widely used by Japanese hikers and construction workers alike.
Best buys:
- Waterproof jacket - ¥1,000–2,000; seam-sealed, truly waterproof; not stylish but works
- Thermal layers - ¥1,000–1,500; HeatTech-equivalent without the Uniqlo brand markup
- Work pants - stretch, durable, packable; surprisingly good for walking days
Caveat: Styling is more utilitarian than Uniqlo/Montbell. If you want functional rain coverage on the cheap, this is unbeatable. If aesthetics matter, pay more for Montbell or Uniqlo.
Locations: Suburban-focused chain; urban Workman Plus locations exist in Ikebukuro (Tokyo, close to the base) and Shinjuku. Worth checking if passing through.
Vintage - Shimokitazawa, Nakazakicho, Koenji
Not performance focused, but Japan’s vintage scene is strong - better curation, lower prices, and different stock than Western vintage. See Ana - Day Options for the Shimokitazawa breakdown.
For clothing that complements the trip:
- Shimokitazawa (Tokyo): wool shirts, outerwear, Levi’s 501s, Carhartt, workwear - all in great condition, priced well under Western vintage. Good source for a warm layer that looks better than Uniqlo.
- Nakazakicho (Osaka): indie boutiques; mix of new and vintage; more design-forward than thrift
- Koenji (Tokyo, Chuo Line from Shinjuku): adjacent to Shimokitazawa in spirit, less curated but cheaper; more neighborhood vintage shops vs. dedicated stores
Shoes - Options in Japan
Onitsuka Tiger: Classic Japanese sneaker brand (parent of ASICS). Very comfortable, designed for walking. Better selection in Japan than abroad. Available at department stores and standalone shops in Ginza and Shibuya. ¥12,000–20,000. If you need a versatile comfortable shoe that also looks good, this is the call.
ASICS Japan: Technical walking/running shoes with Japan-exclusive colorways. Gel Kayano and Nimbus lines are excellent for high-step-count days. ABC-Mart chains carry a broad range.
New Balance Japan: Japanese colorways; the 574 and 993 in Japan-specific tones are often nicer than US equivalents. Available at ABC-Mart and select department stores.
ABC-Mart (エービーシー・マート): National shoe chain. Good for browsing multiple brands, comfortable walking options, and casual sneakers. Locations everywhere. Good first stop if you didn’t bring the right shoes.
Slip-ons: Useful in Japan - shoes come off at tatami restaurants, traditional spaces, and accommodations. A clean slip-on (Muji or ABC-Mart) is worth having if you’ll be doing traditional-style dinners or staying somewhere with genkan etiquette.
Where to Buy on the Trip
Tokyo is the primary shopping base — dedicated time is planned there with room for expanded bags. Osaka is traveled light; pick up only immediate needs if something’s wrong on arrival.
Osaka (emergency/opportunistic only):
- Uniqlo Shinsaibashi and Grand Front Osaka (Muji + Montbell Umeda) are available if you land and something critical is missing — but no dedicated shopping days planned.
- Nakazakicho is good for slow vintage browsing if it fits a day naturally.
| When | Where | Best For |
|---|---|---|
| Osaka (if needed) | Uniqlo Shinsaibashi | Emergency layers only; full flagships are in Tokyo |
| Osaka (if needed) | Grand Front Osaka — Muji + Montbell (Umeda) | Same cluster; Montbell for Matt if a hike kit gap surfaces early |
| Osaka any day | Nakazakicho | Vintage/indie; if it fits naturally |
| Tokyo Day 1 (Apr 15) | Muji Yurakucho + Uniqlo Ginza | Primary run — buy the bulk here |
| Tokyo any day | Shinjuku Montbell | Matt’s full hike kit; Versalite shell, trekking socks, trail fleece |
| Tokyo any day | Shimokitazawa | Vintage wool, outerwear, denim |
| Tokyo any day | Workman Plus Ikebukuro | Cheap performance backup; 10 min from base |
| Anywhere | Konbini socks/underwear | Emergencies; 7-Eleven and FamilyMart carry basics |
What to Actually Buy - Practical List
If packing light from home, prioritize buying these in Japan:
- 1 merino wool layer (Uniqlo or Muji) - ¥3,000–5,000; the single highest-value purchase for the trip
- Ultra Light Down jacket (Uniqlo) - ¥5,000–8,000; packs to nothing; fixes every “too cold” situation — Jeff and Matt only
- Uniqlo Pufftech jacket (synthetic) - ¥3,000–5,000; down-free alternative — Jeannette and Ana
- Rain shell - Uniqlo packable for budget, Montbell Versalite for quality; April needs this
- 1–2 additional base layer tops (Uniqlo AIRism or HeatTech depending on weather) - ¥1,500–2,000 each
- Comfortable walking shoes - Onitsuka Tiger or ASICS if you need them; buy early in the trip, break in immediately
Don’t need to buy:
- Heavy coat - April doesn’t require it; the down + rain shell covers all conditions
- Formal wear - nothing on the trip requires it (Blue Note is smart casual at most)
- Swimwear - no swimming on this itinerary
Tax-Free Shopping
Clothing purchases over ¥5,000 (before tax) at participating stores (Uniqlo, Muji, department stores) qualify for 10% consumption tax refund. You’ll need your passport. See Tax-Free Shopping for the process.