SPECIFICATIONS Backpacks Type: Softback Brand Name: ReFire Gear CN: Zhejiang Capacity: 20-35 Litre,36-55 Litre Carrying System: Air Cushion Belt Choice: yes Closure Type: Zipper Exterior: Solid Bag Function: Other Gender: Unisex Handle/Strap Type: soft handle High-concerned chemical: None Interior: Interior Zipper Pocket Item Type: Backpacks Lining Material: POLYESTER Main Material: POLYESTER Origin: Mainland China Pattern Type: Solid Place Of Origin: China (mainland) Rain Cover: No Style: Casual Parameters: 25L Size: 40cm x 25cm x 25 cm dimensions and appropriately sized 25L capacity 45L Size:  50cm x 30 cm x 30 cm dimensions and appropriately sized 45L capacity