Safety-----Cover: ABS (resin) / PP (polypropylene) Seal: Food-grade silica gel material Cup body: Tritan (copolymer polyester) / BPA-free, safe and non-toxic. Practicality-----Supports 1000ml of sufficient water. Leak-proof design, no water overflow. Temperature resistant, can withstand temperatures from -10℃ to 96℃. Convenience-----Sturdy cap hook design, very convenient to carry. Straw design, easy to drink. Multi-functional-----Easy to use and useful at home, work, camping, sports, gym, yoga, travel, mountain climbing, hiking, cycling, and other places.