Material Thermoplastic Polyurethane, HDPE, PP, Silicone, Nylon 100% BPA & PVC free Certified by FDA and EU Weight 68g Capacity 500ml Dimensions Usage:23.2cm (H) × 8cm (D) Highlights Keep your water cool and prevent bottle sweat. An insulated version of our handheld SkyFlask™ 500ml soft bottle, the SkyFlask IT 500ml features our IsoBound™ technology. Engineered to keep fluids at an ideal temperature 38% longer than a standard flask Isobound™ Insulation prevents heat transfer from the user to the hydration, the ideal solution for a wide range of outdoor endurance activities Lightweight Locking Cap: Leakproof, twist-locking cap for spill-free transport The ideal hand-held solution for running, adjustable strap cinches down to fit different hand sizes Compressible design shrinks as you drink, reducing water movement and easily stores in your pocket when empty Leakproof, twist-locking cap allows for spill-free transport Soft material conforms 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 valve auto-seals after each sip, eliminating annoying drips Large standard 42mm opening lets you fill the softflask easily with ice and drink mixes Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity Can be frozen or filled with hot water (max temp 60° C / 140° F) Safe and reliable, 100% BPA & PVC free Ideal for camping, adventure and everyday uses Compatible Filters (sold separately): Katadyn Befree Filter