12oz/355mL Insulated ergonomic flask; Reflective logo and tape improves visibility; Comfortable hand strap keeps you carrying water grip-free; TPU grip helps minimize slippage from sweaty hands; Double wall insulated bottle helps to keep fluids cold for extended periods of time; Ergonomically shaped bottle fits perfectly in hand and is easy to squeeze; High flow Push-Pull Blast Valve cap has a quicker rebound to keep you hydrated on the go