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Dr. Scholl's Custom Fit orthotic insoles — Japan is a walking country; 20,000+ steps a day between temples, stations and neighborhoods is normal. Real arch support is the difference between day three being fun and your feet quitting.
Compeed blister plasters — hydrocolloid cushions that stay on through showers and miles. Pack them before the blister; the nearest pharmacy mid-walk won't have the English label you're hunting for.
Low-cut no-show socks, 12-pair — you'll take your shoes off constantly (restaurants, ryokan, temples, some shops), so easy on/off and a fresh pair daily matter more than they do at home.
RUIXUE 15-20 mmHg compression socks — for the long flight in and the long walking days after. They reduce swelling and leg fatigue; no prescription needed.
Travelon RFID waist pouch — Japan is still a cash-and-IC-card country; you'll carry ¥10-20k and your passport daily (tax-free counters, hotel check-in). Keep them under your clothes, RFID-blocked.
BagPodz packable tote — konbini runs and souvenir hauls add up and bags aren't free. A foldable tote lives in your day bag and saves buying one at every Lawson.
Anker 65W GaN, 3 ports — Japanese hotel rooms are famously short on outlets. One wall socket charges laptop, phone and camera at once. Japan uses the same Type-A plug as North America.
Anker USB-C to USB-C 100W cable, 2-pack — e-marked for full-speed laptop and camera charging. Two, so a lost cable in Shibuya isn't a dead phone in a city whose signs you can't read yet.
Anker Prime 20,100 mAh — a full day of maps, translation and photos drains a phone fast. Airline-legal at 72.4 Wh, so it flies carry-on for the trip over.
TESSAN universal adapter — for visitors from the UK, EU, Australia and elsewhere. Japan uses Type A, so North American plugs fit natively and US/Canada travelers don't need this at all.
Japan uses the same Type-A plug as North America, at 100V — close enough that every dual-voltage charger, laptop and phone works fine, and a voltage converter is never needed. The adapter above is only for travelers coming from the UK, Europe, Australia or elsewhere.
BAGSMART compression packing cubes — Japan rewards traveling light (and lets you forward luggage hotel-to-hotel by takkyubin). Cubes compress a week into a carry-on.
TSA-approved cable lock — for the hostel locker, or a station coin locker while you explore bag-free for the day.
Rainleaf microfiber towel — quick-dry for the onsen, the ryokan, or a sudden downpour. Folds tiny, dries fast.
LEAGERA compact windproof umbrella — Japan's rainy season and typhoon months are real and a sudden shower is common year-round. Auto open/close, fits a day bag.
Hiearcool IPX8 phone pouch — fully waterproof, so rain (or a ramen splash) can't kill the phone you navigate and translate with all day.
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The companion guide is the reference page: Japan's Type-A plug, the 100V / 50-60Hz split between east and west, what works without a converter, and which travelers actually need the universal adapter.
From the US or Canada, no — Japan uses the same Type-A plug at 100V, so your chargers fit and work. From the UK, Europe, Australia or elsewhere, yes — the universal adapter in the pack covers it. Nobody needs a voltage converter; modern USB-C gear is dual-voltage.
It'll plug in, but Japan's 100V is lower than the US 120V, so single-voltage heating appliances run weak. Don't bring a voltage converter — use the hotel/ryokan dryer or buy a cheap dual-voltage one. Phone, laptop and camera chargers are all fine.
Largely yes — shrines, small restaurants, older ryokan, coin lockers and rural spots are often cash-only. Carry ¥10-20k, get an IC card (Suica/Pasmo) for transit and konbini, and keep a tote for the change and souvenirs.
Japan trips routinely hit 20,000+ steps a day across stations and neighborhoods, and you'll slip shoes on and off constantly. Insoles, blister care and easy socks do more for the trip than almost anything else in the bag.
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