English edition. Specs come from the makers' official pages in Japan. Prices are in Japanese yen (JPY) from Japanese online stores, and most shops ship within Japan only. Links marked JP open pages in Japanese. Buying from outside Japan? Rakuten's own forwarding service, Rakuten Global Express, ships Rakuten Ichiba orders to more than 80 countries and regions. Gas canisters and spray cans can't be shipped, and lithium batteries are capped at 100Wh per pack. Check their shipping quote before you order.

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Pictured (Rakuten Ichiba): EVERNEW Water Carry 1500ml / Thermos Mountain Bottle FFX-902 / EVERNEW Water Carry 900ml / EVERNEW Water Carry 2000mlHow Many Liters of Water for a Hike? Calculation and 6 Ranked#1 is a 36g, 1.5 L bottle. How many liters of water do you need on a hike? By the formula of Japan's Central Council for Mountain Accident Prevention (body weight × hours on the move × 5), a 60kg person hiking 5 hours needs 1,500ml. #1 is the EVERNEW Water Carry 1500ml, 36g for 1.5 L. I lined up 6 using EVERNEW's and Thermos's official capacity, weight, heat retention and price, and calculated container weight per liter.Rankings · Oct 17, 2026
Pictured (Rakuten Ichiba): Mammut Eiger Nordwand Pro 2-in-1 Glove / Mammut Arctic Mitten / Mammut Eiger Nordwand Warm 3 Finger Glove / Mammut Astro Guide Softshell GloveWinter Hiking Gloves: How to Choose and 6 RankedNo. 1 is Mammut's 2-in-1. For winter hiking gloves, you layer an inner glove under a mitten. No. 1 is the Mammut 2-in-1 (258g, ¥38,500). Layering the Fleece Pro Glove and Arctic Mitten comes to 97g, which works out 161g lighter and ¥8,250 cheaper.Ranking · Oct 15, 2026
Products shown (Rakuten Ichiba): Swans Df.Pathway polarized lens model PW-0051／Swans LUNA photochromic lens model LN-0066Z／The North Face Horizon Hat (unisex)／Petzl e+LITEHow to Choose Hiking Sunglasses, and My Pick27% visible light transmittance at 20g. When choosing hiking sunglasses, look at visible light transmittance and UV transmittance separately. My pick is the Swans Df.Pathway polarized (27%, 20g, ¥15,400). I compared it with the photochromic LUNA and Montbell on official numbers, and chose 1 pick each for a hat and a backup light. The 3 together weigh 131g.How to choose · Oct 17, 2026