Glass breaks and one can expect to replace glasses like this on a regular basis. The alternative is a glass made with plastic, but plastic glasses can rarely be found in the correct shape. This wine glass is as delicate-looking as real glass and has a tulip-shape design like a wine glass should have. However, it is made from Tritan instead of real glass, making it virtually unbreakable as well as dishwasher safe. Use inside or out being made of unbreakable plastic. Crystal clear and dishwasher safe. Ideal for events, parties, barbecues, glamping, camping, festivals, pool sides as a safer alternative to glass without any compromise in quality and feel.