OUTAD 15L (4 gal) Lightweight Backpack with Helmet Net for Riding, Cycling, Hiking, Camping, Climbing, Backpacking, Skiing, Snowboarding Ultralight: Weighs only 15.5oz (440g), can be easily folds to a compact size to fit inside other backpacks or luggage. Three pockets in total: Main pocket with 2 front pockets. Note: The main compartment opens from the side. Two water bottle holders on each side with adjustable straps to secure your bottle. Integrated breathable mesh pad makes the back breathable. Chest and waist strap are included for comfortable wearing. The included helmet net saves you a huge amount of space for helmet storing. The backpack is versatile for riding, cycling, hiking, camping, climbing, backpacking, Skiing, Snowboarding and all other outdoor activities.