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New for 2025, the UltrAspire 800 collapsible SoftFlask carries 800mL of fluid. The unique wedge shape allows this SoftFlask to slide easily in and out of hydration pockets. Comes with a larger diameter 42mm top to fit ice cubes or nutrition options.
The ideal large volume hydration solution for running or hiking
Soft material conforms to the space given 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
Compatible with our new Bloddle hose system
Large 42mm opening makes it easy to fill with ice or nutrition mixes and easier to clean.
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 45g
Capacity 800mL
Made for UltrAspire by Hydrapak
Also available in 300mL and 500mL capacity
As at 1st Feb 2026:
We are currently expecting normal order processing times of one to two days from ordering to shipping.
Orders for the moment, are being processed and shipped within one to four working days of being received. Our expected order delivery schedule is...
