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Isuka is a Japanese brand known for its specialized sleeping bags, crafting sleeping bags for mountaineering and camping. From winter mountaineering to three-season tenting, Isuka strives to balance warmth and packability to suit Japan's climate and mountaineering styles. Their extensive lineup ranges from lightweight models using high-quality down to easy-to-handle models using synthetic fiber filling. They clearly display fill power and comfortable operating temperatures, making it easy to choose the right product for your needs. Representative models include the all-around "Air 450," the "Air 280" for summer mountaineering and lightweight options, and the high-grade "Air 810EX" for high-altitude climbing in the coldest winters. This page features used Isuka sleeping bags and sleeping bag covers, as well as other outdoor gear.

50% OFF
New in
【One Size Orange】 Isuka Peak Lite Mattress 120 Sleeping System Mat Sleeping Pad Air Mat z00062048 Air Mat Mat Sleeping Pad S 【One Size Orange】 Isuka Peak Lite Mattress 120 Sleeping System Mat Sleeping Pad Air Mat z00062048 Air Mat Mat Sleeping Pad S - 0

Isuka Peak Lite Mattress 120 Sleeping System Mat Sleeping Pad Air Mat

Isuka ( イスカ )

¥3,769

Original retail price ¥7,560

One Size Orange
37% OFF
New in
【One Size Navy】 Isuka Liner Side Zipper Super Light Polyester Brushed Fleece Sleeping Bag Liner Polyester Sleeping System Sleeping Bag Liner Sheet z00 【One Size Navy】 Isuka Liner Side Zipper Super Light Polyester Brushed Fleece Sleeping Bag Liner Polyester Sleeping System Sleeping Bag Liner Sheet z00 - 0

Isuka Liner Side Zipper Super Light Polyester Brushed Fleece Sleeping Bag Liner Polyest...

Isuka ( イスカ )

¥2,909

Original retail price ¥4,620

One Size Navy
36% OFF
New in
【One Size Black】 Isuka Weathertec Inner Bag 60L, 3-Layer Waterproof and Breathable Material, Made in Japan Nylon Storage Packing Cube Dry Bag z00061856 【One Size Black】 Isuka Weathertec Inner Bag 60L, 3-Layer Waterproof and Breathable Material, Made in Japan Nylon Storage Packing Cube Dry Bag z00061856 - 0

Isuka Weathertec Inner Bag 60L, 3-Layer Waterproof and Breathable Material, Made in Jap...

Isuka ( イスカ )

¥2,739

Original retail price ¥4,290

One Size Black
Sold Out
【One Size Green】 Isuka Ultra Light Compression Bag S, Nylon Storage Packing Bag, Stuff Sack, Inner Pouch z0006 【One Size Green】 Isuka Ultra Light Compression Bag S, Nylon Storage Packing Bag, Stuff Sack, Inner Pouch z0006 - 0

Isuka Ultra Light Compression Bag S, Nylon Storage Packing Bag, Stuff Sack, Inner Pouch

Isuka ( イスカ )

¥3,229

Original retail price ¥4,400

One Size Green
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【One Size Blue】 Isuka Ultralight Compression Bag M Royal Blue Nylon Storage Packing Cube Stuff Sack Inner Pouch z00060786 Royal Blue Stuff Sack Inner Pouch 【One Size Blue】 Isuka Ultralight Compression Bag M Royal Blue Nylon Storage Packing Cube Stuff Sack Inner Pouch z00060786 Royal Blue Stuff Sack Inner Pouch - 0

Isuka Ultralight Compression Bag M Royal Blue Nylon Storage Packing Cube Stuff Sack Inn...

Isuka ( イスカ )

¥3,499

Original retail price ¥4,840

Used SOne sizeBlue tones
Sold Out
【One Size Red】 Isuka Staff Sack Set, 4-Piece Set, Bulk Sale, Wholesale, Bags, Storage, Packing Sacks, Inner Pouches z00060191 Staff Sack, Inner Pouch, Packing Sack, Bag 【One Size Red】 Isuka Staff Sack Set, 4-Piece Set, Bulk Sale, Wholesale, Bags, Storage, Packing Sacks, Inner Pouches z00060191 Staff Sack, Inner Pouch, Packing Sack, Bag - 0

Isuka Staff Sack Set, 4-Piece Set, Bulk Sale, Wholesale, Bags, Storage, Packing Sacks, ...

Isuka ( イスカ )

¥2,499
Used BOne sizeRed tones
[One Size Red] Isuka, Montbell, Granite Gear, etc. - 16 Stuff Sacks, Bags, Storage, Packing Sacks, Stuff Sacks, Inner Pouches z00059573 Stuff Sacks, Inner Pouches, Packing Sacks, Bags [One Size Red] Isuka, Montbell, Granite Gear, etc. - 16 Stuff Sacks, Bags, Storage, Packing Sacks, Stuff Sacks, Inner Pouches z00059573 Stuff Sacks, Inner Pouches, Packing Sacks, Bags - 0

[One Size Red] Isuka, Montbell, Granite Gear, etc. - 16 Stuff Sacks, Bags, Storage, Pac...

Isuka ( イスカ )

¥7,499
Used AOne sizeRed tones
Sold Out
[One Size, Black Series] Isuka Weather Tech Pouch 7 Sizes, Bag, Storage, Packing Sack, Stuff Sack, Inner Pouch z00059577 Stuff Sack, Inner Pouch, Packing Sack, Bag, Storage [One Size, Black Series] Isuka Weather Tech Pouch 7 Sizes, Bag, Storage, Packing Sack, Stuff Sack, Inner Pouch z00059577 Stuff Sack, Inner Pouch, Packing Sack, Bag, Storage - 0

[One Size, Black Series] Isuka Weather Tech Pouch 7 Sizes, Bag, Storage, Packing Sack, ...

Isuka ( イスカ )

¥2,199

Original retail price ¥2,530

Used AOne sizeBlack Tones
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【OneSize Navy】 Isuka Down Plus Tent Shoes Long S Down Footwear Tent Shoes z00059007 Tent Shoes Footwear 【OneSize Navy】 Isuka Down Plus Tent Shoes Long S Down Footwear Tent Shoes z00059007 Tent Shoes Footwear - 0

Isuka Down Plus Tent Shoes Long S Down Footwear Tent Shoes

Isuka ( イスカ )

¥3,679

Original retail price ¥11,000

Used COne sizeNavy tones
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[One Size, Orange] Isuka Ultralight Pack Cover M Nylon Bag Storage Rain Cover z00058495 Rain Cover Bag Storage [One Size, Orange] Isuka Ultralight Pack Cover M Nylon Bag Storage Rain Cover z00058495 Rain Cover Bag Storage - 0

[One Size, Orange] Isuka Ultralight Pack Cover M Nylon Bag Storage Rain Cover

Isuka ( イスカ )

¥2,949

Original retail price ¥4,400

Used AOne sizeOrange tones
Sold Out
[One Size, Green] Isuka Ultralight Pack Cover L Nylon Bag Storage Rucksack Cover z00058497 Rucksack Cover Bag Storage [One Size, Green] Isuka Ultralight Pack Cover L Nylon Bag Storage Rucksack Cover z00058497 Rucksack Cover Bag Storage - 0

[One Size, Green] Isuka Ultralight Pack Cover L Nylon Bag Storage Rucksack Cover

Isuka ( イスカ )

¥3,569

Original retail price ¥4,950

Used SOne sizeGreen tones
Sold Out
【OneSize Green】 Isuka Ultralight Pack Cover S Nylon Bag Storage Rain Cover z00058498 Rain Cover Bag Storage 【OneSize Green】 Isuka Ultralight Pack Cover S Nylon Bag Storage Rain Cover z00058498 Rain Cover Bag Storage - 0

Isuka Ultralight Pack Cover S Nylon Bag Storage Rain Cover

Isuka ( イスカ )

¥2,749

Original retail price ¥3,630

Used SOne sizeGreen Tones
Sold Out
[OneSize Gray] Isuka Ultra Light Pack Cover L Nylon Bag Storage Rucksack Cover z00057723 Rucksack Cover Bag Storage [OneSize Gray] Isuka Ultra Light Pack Cover L Nylon Bag Storage Rucksack Cover z00057723 Rucksack Cover Bag Storage - 0

[OneSize Gray] Isuka Ultra Light Pack Cover L Nylon Bag Storage Rucksack Cover

Isuka ( イスカ )

¥3,569

Original retail price ¥4,950

Used SOne sizeGray tones
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[One Size Grey] Isuka Ultra Light Pack Cover S Nylon Bag Storage Backpack Cover z00057724 Backpack Cover Bag Storage [One Size Grey] Isuka Ultra Light Pack Cover S Nylon Bag Storage Backpack Cover z00057724 Backpack Cover Bag Storage - 0

[One Size Grey] Isuka Ultra Light Pack Cover S Nylon Bag Storage Backpack Cover

Isuka ( イスカ )

¥2,749

Original retail price ¥3,630

Used SOne sizeGray tones
Sold Out
[One Size, Blue] Isuka Weather Tech Light Spats - Gaiters, Spats, Apparel Accessories, z00057492 [One Size, Blue] Isuka Weather Tech Light Spats - Gaiters, Spats, Apparel Accessories, z00057492 - 0

[One Size, Blue] Isuka Weather Tech Light Spats - Gaiters, Spats, Apparel Accessories,

Isuka ( イスカ )

¥3,329

Original retail price ¥5,390

Used AOne sizeBlue tones
Sold Out
【One Size Black】 Isuka Weathertec Inner Bag 30L (Weathertec inner bag 30L, bag, storage, packing sack, stuff sack, inner pouch, z00057151) 【One Size Black】 Isuka Weathertec Inner Bag 30L (Weathertec inner bag 30L, bag, storage, packing sack, stuff sack, inner pouch, z00057151) - 0

Isuka Weathertec Inner Bag 30L (Weathertec inner bag 30L, bag, storage, packing sack, s...

Isuka ( イスカ )

¥2,289

Original retail price ¥3,410

Used AOne sizeBlack Tones
Sold Out
[One Size Navy] Isuka GORE-TEX INFINIUM Sleeping Bag Cover Ultra Light Wide Navy Blue Nylon Sleeping Bag Cover [One Size Navy] Isuka GORE-TEX INFINIUM Sleeping Bag Cover Ultra Light Wide Navy Blue Nylon Sleeping Bag Cover - 0

[One Size Navy] Isuka GORE-TEX INFINIUM Sleeping Bag Cover Ultra Light Wide Navy Blue N...

Isuka ( イスカ )

¥14,499

Original retail price ¥23,650

Used SOne sizeNavy tones
Sold Out
Isuka Ultra Light Pack Cover L (One Size, Blue) Nylon Bag Storage Rucksack Cover (z00055180) Isuka Ultra Light Pack Cover L (One Size, Blue) Nylon Bag Storage Rucksack Cover (z00055180) - 0

Isuka Ultra Light Pack Cover L (One Size, Blue) Nylon Bag Storage Rucksack Cover (z0005...

Isuka ( イスカ )

¥3,569

Original retail price ¥4,950

Used SOne sizeBlue tones
Sold Out
One Size Red Isuka WeatherTech Short Spats, Nylon, Clothing, Accessories, Gaiters, Spats, z00055131 One Size Red Isuka WeatherTech Short Spats, Nylon, Clothing, Accessories, Gaiters, Spats, z00055131 - 0

One Size Red Isuka WeatherTech Short Spats, Nylon, Clothing, Accessories, Gaiters, Spats,

Isuka ( イスカ )

¥2,529

Original retail price ¥4,950

Used BOne sizeRed tones
Sold Out
Isuka GORE-TEX Light Gaiters Front Zipper, One Size, Black. Made of nylon. Also available: clothing and accessories. z00055130. Isuka GORE-TEX Light Gaiters Front Zipper, One Size, Black. Made of nylon. Also available: clothing and accessories. z00055130. - 0

Isuka GORE-TEX Light Gaiters Front Zipper, One Size, Black. Made of nylon. Also availab...

Isuka ( イスカ )

¥3,809

Original retail price ¥7,040

Used BOne sizeBlack Tones
Sold Out
One Size Navy Isuka Boot Case Nylon Bag Storage Packing Sack z00055224 Packing Sack Bag Storage One Size Navy Isuka Boot Case Nylon Bag Storage Packing Sack z00055224 Packing Sack Bag Storage - 0

One Size Navy Isuka Boot Case Nylon Bag Storage Packing Sack

Isuka ( イスカ )

¥2,199

Original retail price ¥2,310

Used AOne sizeNavy tones
Sold Out
Isuka Ultra Light Pack Cover, Size Small, Orange, Nylon, Bag Storage, Backpack Cover (z00054848) Isuka Ultra Light Pack Cover, Size Small, Orange, Nylon, Bag Storage, Backpack Cover (z00054848) - 0

Isuka Ultra Light Pack Cover, Size Small, Orange, Nylon, Bag Storage, Backpack Cover (z...

Isuka ( イスカ )

¥2,059

Original retail price ¥2,520

Used SOne sizeOrange tones
Sold Out
One Size Gray Isuka Ultralight Compression Bag, Large, Nylon, Storage, Packing Sack, Stuff Sack, Inner Pouch (z00054545) One Size Gray Isuka Ultralight Compression Bag, Large, Nylon, Storage, Packing Sack, Stuff Sack, Inner Pouch (z00054545) - 0

One Size Gray Isuka Ultralight Compression Bag, Large, Nylon, Storage, Packing Sack, St...

Isuka ( イスカ )

¥3,839

Original retail price ¥5,390

Used SOne sizeGray tones
Sold Out
One Size Purple Isuka Air Plus 810 Down Sleeping System (z00054550) One Size Purple Isuka Air Plus 810 Down Sleeping System (z00054550) - 0

One Size Purple Isuka Air Plus 810 Down Sleeping System (z00054550)

Isuka ( イスカ )

¥65,499

Original retail price ¥105,600

Used SOne sizePurple tones