Adjustable Wrist Strap: The 2in wide elastic wrist strap offers comfort and safety during exercise with its Velcro design that allows you to adjust the tightness for a customized fit.Portable and Easy to Carry: Running water bottle is 1.4in high when full of water and only 0.4in high when empty, small size that allows you to simply wear it on your wrist for convenience during travel and outdoor activities.Health Material: Wrist water bottles are made of food-grade platinum silicone without BPA, soft, flexible, resistant to kinking without deformation.Versatile for Activities: Stay hydrated during running, hiking, climbing, cycling, yoga, gym, and other indoor or outdoor activities with this leak proof silicone jug.Leak Proof Design: Made of food-grade silicone, this water bottle has a leak proof design that keeps your drinks secure during exercise and travel.