HydraPak Flux Collapsible Backpackers Water Bottle (1.5 Litre) BPA Free, Ultralight, Leak Proof Twist Cap Mammoth Grey

Lightweight and compressible, 50% lighter than a hard bottle and compressible, when empty, to pocket size. High flow nozzle: the high flow drinking nozzle is equipped with a dust cover and can be quickly opened and closed with one hand. Filter compatible: compatible with water filters with 42 mm thread for off-road use, including the HydraPak 42 mm filter cap. Fits in backpack bags. Designed to fit into the backpacks in full condition and be rolled up to save space when empty. Ultra durable: made of two-layer film laminate, with abrasion-resistant TPU and RF-welded seams for excellent durability and elasticity