Nathan Thermal Sprint Handheld Bottle Handhelds keep athletes safe via an incorporated I.D. card, I.D. printing directing emergency personnel to critical information. Detailed reflective adds to safety and is included on the Sprint Handheld Moisture-wicking, adjustable Wall Mesh hand strap An insulated carrier keeps fluids warm or cool, leaving your hand unaffected by the temperature of the fluid you're holding. Power stretch mesh pocket with Velcro closure