【DOUBLE-LAYER DESIGN】- Set of 4 stackable cups. The double-walled insulated design is insulated and anti-scalding, solving all the problems caused by single-walled cups ,Don’t worry about hot or cold hands ,it will solve all of these perfectly, that makes it more unique. 【ECO-FRIENDLY HEALTHY】 - Don’t risk it with broken glass, flimsy plastics, or cheaper, substandard alternatives. These mugs are made of high quality food grade stainless steel. Superior quality, blunter, rounder and even thicker than the original cups. Safe and non-toxic, it is an ideal substitute for fragile glass and unhealthy plastic cup. 【BEAUTIFUL AND PRACTICAL】 - Once you try our cup, you never look back . unbreakable, transportable, refrigerable, dishwasher safe, rustproof and recyclable. They look FANTASTIC in any home and are perfect for almost anything from cocktails to ice cream. Enjoy it at barbecues, picnics, parties, camping, boating, by the pool, hiking or traveling on an outdoor adventure! 【SMALL