320ml Vacuum Insulated Tumbler with Light Stainless steel vacuum insulation keeps drinks cold or hot for extended locking lid prevents spills even if

This wine glass features a distinctive stemless design, eliminating the need for a stem. The patented two-stage locking lid prevents leaks. (BevLock Technology) Keeps drinks cold for 6 hours / keeps drinks warm for 4 hours. *Results are not guaranteed. *Results may vary depending on the surrounding environment and type of beverage. It has a non-slip bottom with a slip guard, and the bottom is less prone to condensation, so the surface where it is placed will stay dry. Made of stainless steel, so it's durable and long-lasting.