Speed up the switchback with the UltraFlask™ Speed 500ml by HydraPak.

Constructed with soft, supple TPU with abrasion-resistant features and RF welded seams for added toughness – bound from the roads to the rocks in lightweight comfort. Walk on air thanks to the bounce-free stability of a vest-pack fitting, and feel the burn in only the right places owing to a flexible flask shoulder to prevent chafing. Jet off on treks thanks to a high flow bite valve for fast refreshment in spurts, with auto-sealing to prevent leakage - so you can continue to run the off-tracks dry. This flask folds with you, shrinking as you drink for minimal water movement and compressing to a flexible pack size. A wide working temperature range means you can bound from sunbaked bitumen to frosted rocks with adequate hydration.

For water that works with you, the HydraPak UltraFlask™ Speed 500ml sends you speeding up the slopes.

• Compressible and flexible
• Shrinks as you drink for minimal water movement
• Ideal for replacing a running vest, pack, or belt pocket
• Vest-pack fit for bounce-free stability
• Flexible flask shoulder to prevent chafing
• High-flow bite valve
• Bite valve auto-seals to avoid leakage
• Large 42mm opening for easy refilling with ice or drink mixes
• Flip-top cap for fast refilling
• Customisable cap, enabling either the mounting of bite valve or use of straw cap
• TPU construction for abrasion resistance and durability
• RF-welded seams for durability and elasticity
• 100% BPA and PVC free
• Wide working temperature range from frozen to a maximum of 60 degrees Celsius