A small back pack with water bladder inside
1. Fabric: 600D polyester or 1000D cordura
2. Size: 10x25x35cm 8x35x50cm
3. Color: GREEN. Black, CAMO
4. PP webbing and plastic buckle, a water bladder with a small cover(2L or 3L, EVA or TPU material) inside, but without a small entrance cover, tube protector and nipple cover.
5. Function: It is very convenient to bring it with body, and keep the liquid same temperature for long time