This backpack is made of high-quality nylon fabric, lightweight and tear-resistant. It can be folded into the bottom pocket for easy storage and portability, very convenient for cycling, running, camping, travel and other outdoor activities. Functions: Made of ripstop nylon fabric that provides extreme lightness and durability. Main compartment with special bottle sleeve. Breathable mesh straps on the back and shoulders provide ultimate comfort. Reflective elements for improved visibility and safety at night. When folded into the bottom zippered pocket, it will fit anywhere. Comes with a 2-liter water bladder that keeps you hydrated throughout the day. Perfect backpack for cycling, camping, hiking, travel and other outdoor activities. Specifications: Material: nylon Color: Black and Green Dimension: approx. 40*20* cm /15.7*7.9*2.8in Weight: 265g / 9,3 oz Irrigation bladder: Size: 40 * 17 cm / 15,7 * 6,7 inch Snake: approx. cm / 39.0in Weight: approx. 125g / 4,4 oz List of packages: 1 * backpack 1 * Irrigation Bladder