Ultraflask Hydrapak

Hydrapak Ultraflask

Hydrapak's Ultraflask is in the ultralight category. At 500 ml, it's easy to forget. Weighing just over an ounce, it's optimal hydration for any type of runner. Its flexible material fits most pockets, it shrinks when you drink to minimize water movement and it can be used with or without the tube. Ultra-light, ultra-useful.

Comfortable, compressible fit

Soft material conforms to most hydration vests, belts or pack pockets. The water bottle can be used simply as an addition to or replacement for this equipment. The flexible design shrinks as you drink, reducing water movement. It includes a bite valve cap and an adjustable drink tube cap. The high-flow valve seals automatically after each sip, eliminating annoying drips. The large, standard 42 mm opening lets you easily fill the UltraFlask with ice and drink mixes.

Customize your cap with two options to match your race or vest, mount your bite valve directly or use the straw cap (4" / 100 mm). Made of ultra-durable, abrasion-resistant TPU and welded RF for superior durability and elasticity. 100% BPA- and PVC-free, wide operating temperature range (can be frozen - maximum temperature 60°C / 140°F)