* Lightweight and compressible, 50% lighter than a hard bottle and compressible, when empty, to pocket size.

* The high flow drinking nozzle is equipped with 360-degree rotating  making water replenishment more convenient, adjustable nozzle, open up and close down, stable and leak-proof

* Designed to fit into the backpacks in full condition and be rolled up to save space when empty.

* It is made of two-layer film laminate, with abrasion-resistant TPU and RF-welded seams for excellent durability and elasticity