Plastic, 28 CMx 9 cm BPA free, Easy grip, Light in weight, Portable, Leak proof, No roll over, Durable The look of the bottle accessories your kids school & play time and even your office, gym, on road or outing time Smooth design with the ribbon attached to the cap helps you to carry bottle anywhere with ease It’s unique shape and translucid colors will motivate you to stay hydrated Read Less