Made of advanced anti-tear water resistant nylon fabric, ultralight and durable- 2L water bag and super lightweight 5L backpack, constructed by water-resistant oxford fabric- Anti-slip breathable s type shoulder strap, heat absorption, non-toxic and comfortable- Advanced thick mesh net, reduce the friction of the back, making cycling easier and happier- Size: water bag: 41 x 17cm / 16.14 x 6.69 inches, backpack: 43.00 x 26.00cm / 16.93 x 10.24 inches- Suitable for outdoor activities like cycling, hiking, climbing, etc. 

Excellent condition. Used once at a music festival.