Keep your water cool and prevent bottle sweat. An insulated version of HydraPak’s handheld SkyFlask™ Speed 350ml soft bottle, the SkyFlask IT Speed 350ml features IsoBound™ technology. Engineered to keep fluids at an ideal temperature 38% longer than a standard flask.

Covered by HydraPak's Beyond Lifetime Guarantee.

• The ideal hand-held solutionFor running, adjustable strap cinches down to fit different hand sizes
• SpeedFill™ capFlips open for quick refills and snaps closed for a spill-proof seal
• Four-layer designProvides users with more structure, an enhanced grip, and a no-sweat, comfortable carrying experience
• Compressible designShrinks as you drink, reducing water movement and easily stores in your pocket when empty
• Soft materialConforms to your hand and the precise fit means that you can run with a relaxed hand and still securely hold your water
• High-flow bite valveAuto-seals after each sip, eliminating annoying drips
• Large standard 42mm openingLets you fill the Skyflask easily with ice and drink mixes
• Ultra-durableAbrasion resistant TPU & RF welded seams for superior durability and elasticity
• VersatileCan be frozen or filled with hot water (max temp 60° C), 100% BPA & PVC free