・ Outer material: 1000DTPE fabric laminate (100% polyester), 840D nylon ・ Capacity: 21-30L ・ Closure: Zipper ・ Height 39cm x Width 28cm x Depth 13cm ・ Number of pockets: 6 (1 outside / 5 inside) ・ Weight: 780g Purchased at the Futako-Tamagawa store and used about twice. It's a kids' size, but it's a size that adults can also wear.