Double Wall
* Vacuum Insulated
* Comes individually boxed
* BPA FREE 
* Coated for Sublimation
* Material: Food-grade 304 stainless steel
* Music tumbler cup: Each stainless steel speaker tumbler cup has a detachable wireless speaker in the base,you can enjoy music and relax while drinking water with this wireless music tumbler.
* Double Wall Insulated: Keeps drinks cold or hot for 6-12 hours,bring you much convenience.
* this new tumbler APPLICABLE TO VARIOUS OCCASIONS，The sublimation can insulator skinny tumbler can add ANY designs you want,really suitable as the customized gift for your friends,family,company gifts.
* Notice: When you wash the speak tumbler,unscrew speaker to separate it from the cup,speaker cannot be washed, it will be damaged.Do not microwave.