The UltrAspire collapsible SoftFlask carries 300mL of fluid. The unique wider / flatter wedge shape allows the SoftFlask to slide easily in and out of a hydration pocket of any modern hydration pack. Comes with a regular diameter 28mm top that features a silicone sheath bite valve. Soft material conforms to your hand to provide 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 and includes a twist locking cap for added security 28mm opening makes it a low-profile storage option Made of ultra-durable, abrasion resistant TPU (Thermoplastic Polyurethane) Silicone, HTPE & RF welded seams for superior durability and elasticity Wide working temperature range (can be frozen - max temp 60° C) Safe and reliable, 100% BPA & PVC free Weight 30g Capacity 300mL Made for UltrAspire by Hydrapak Also available in 500mL and 800mL capacity.
