DOUBLE WALL VACUUM INSULATION: Under normal temperature, it can keep a tumbler of ice cake for 12h until the ice totally melt, or hot coffee warm for 6h.

You have to fill them to the brim to get 30 ounces.

LIFETIME DURABILITY- 18/8 food grade stainless steel body, BPA free, healthier than plastic cup.

The insulated tumbler never sweat due to the Vacuum insulated design.

Powder coating on the outside fits more comfortably in your hand, looks good, anti-slip.

APPLICABLE TO VARIOUS OCCASIONS - MEWAY vacuum travel tumbler great for outdoor adventure, road trips, sports event, also the perfect travel cup to bring coffee from home to work or fill a tumbler of drink before you go to bed to drink through the night.

EASY CLEANING: hand washing is recommended, electro--polished interior doesn't transfer flavor & no metal aftertaste, you don't have to worry about your morning coffee or afternoon teas being ruined.