FOR SPORTS ENTHUSIASTS As a workout companion, or as a regular carry item, your sports bottle is designed to suits the lifestyle of everyone who enjoys sports and outdoor activities. EXCELLENT HEAT/COLD INSULATION PERFORMANCE Your gym water bottle is made of 18/8 stainless steel, which is resistant to heat and corrosion. A three-layer vacuum insulation structure with copper foil sandwiched between the layers provides all-day heat retention. EASY TO USE Your sports drink bottle is equipped with an easy-to-drink straw-type mouthpiece, a one-touch open/close button, a safe-to-use lock, and a unique & comfortable carry strap meant to fit your palm, not your finger. LEAK-PROOF AND DURABLE Your stainless steel sports water bottles are more sturdy and leak-proof than ordinary plastic water bottles. FOOD GRADE MATERIAL The lid of your lightweight water bottle is made of food-grade polypropylene material and silicone packing. It is BPA-free, environmentally friendly, and safe to use.