Flexible bottles get an upgrade. The Flux is shaped like a hard bottle, compresses like a soft flask, and cuts weight by 60 percent.

Topped with a spill-proof twist cap for grab-and-go hydration, plus a bail handle to keep hydration secure in your hand or on your pack. Finish your drink, and this bottle packs down to earn its space in your pack. With Flux, innovation fuels performance.

• Packable. At only 77g, it packs down smaller than a deck of cards, your new thru-hiking essential

• Spill-Proof. Unique drink-through cap with spill-proof valve for easy drinking and no leak-usage

• Filter Compatible. Attaches to most 42mm threaded water filters, use as your backcountry squeeze bag or drink directly through the cap.

• Durable. Dual-layer film laminate construction adds structure and RF-welded soft walls give grip without compromising compactness