The composite material allows for a lightweight, seriously strong & heat insulating cup with no awful plastic taste. Enjoy your drink as intended. Specially designed with a "nose-dome" to avoid that annoying nose-to-lid collision. Won't burn your hands so no need for a silicone sleeve! The mouth piece makes drinking a pleasure by controlling the flow of liquid. A perfectly designed cup. hey fit in car cup holders. Great for coffee, a variety of teas, soft drinks and fresh water. Keeps drinks cold as well as hot. Handle can double up as a carabiner.