SUPREME MATERIAL This water bottle for running is made of high-quality PP that is totally safe to use. The manufacturer has the certificate to show it's BPA-free. The bottle cover is made of Oxford fabric and diving materials, with a fluorescent effect, which is convenient for night running. LEAK-PROOF WATER BOTTLE Mini water bottle was designed with a push-on cap and cross valve, to prevent water leakage even during running. Bite the silicone mouth lightly or press the spout with fingers, then easy to suck the water out. HANDS-FREE DESIGN This 200 ml (7 oz) capacity running bottle with hand straps and an anti-drip sports lock cap. Fully Adjustable added Velcro elastic wrist strap with a strong hoop ensures the bottle is secure on your wrist, offer you a completely hands-free option when doing outdoor activities. CONVENIENT FOR OUTDOOR ACTIVITIES Small size and light weight hydration system, allows you to take it on cycling, walking, morning jogging, marathon running, riding & fitness occasion. ADJUSTABLE WRISTBAND The wristband of the bottle cover is approximately 7.8 inches in length that are elastic with Velcro, and it can be adjusted to the appropriate length. Really convenient, comfortable, and easy to use.