Zak! Designs Insulated Fluted Travel Tumbler in Lunar Silver, BPA-free, Lightweight and Durable Stainless Steel, Double Wall Construction and Leak-proof Slide Lid, 16 oz. Capacity 16 oz. Insultated Fluted Travel Tumbler with Liquid Lock Slide lid keeps contents warm and inside the cup while on the go; in popular pearlized stainless steel finish Doublewall construction keeps exterior cool to the touch while contents stays warm; for best results, rinse tumbler with hot water just before filling Liquid Lock Slide Lid is leak-proof when closed; slide lid has one-hand operation for easy use while on the go BPA-free, lightweight and durable stainless steel; Tumbler fits in most car cup holders and single serve brewers Handwashing is recommended for tumbler; lid disassmebles for easy cleaning and can be washed in dishwasher; do not microwave