This is a glow in the dark design.
*Durable
*Lead free
*Anti rust
*Lightweight
*Food grade stainless steel
*Leak proof lid with straw
All my tumblers are double walled vacuum insulated, will keep your drinks cold for 12 hours and hot for 6 hours. I have added a protective anti slip rubber bottom. Hand wash your tumbler to keep the design looking great, the dishwasher will fade the design.