2 in 1 cap which protects the drinking spout and can also be used as a cup Body made of Tritan, a strong material which is very resistant and as clear as glass Spill and leak proof: "push system" automatically seals when you stop drinking Easy to clean: dishwasher safe, large opening, nozzle can be disassembled Part of a range of matching items including lunch box, lunch bag and cutlery set