Product Review

FEATURES of the Hydrapak UltraFlask The UltraFlask 600 flask fits easily in most hydration vest, belt or pack pockets Soft material conforms to any pocket for a comfortable carrying experience Flexible design shrinks as you drink, reducing water movement on the run High-flow bite valve auto-seals after each sip, eliminating annoying drips Includes removable/adjustable drink tube; cut to a custom length or mount bite valve directly to cap Large 42mm opening lets you fill the UltraFlask easily with ice and drink mixes Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity Can be frozen or filled with hot water (max temp 60° C / 140° F)