WineTanium Unbreakable 18 oz Beer Mugs - 100% Tritan - Shatterproof, Reusable, Dishwasher Safe - Set of 4 Shatterproof, unbreakable beer mugs  perfect for parties, pools, picnics and boats Top-rack dishwasher safe - no hand washing needed! Made of BPA-free Tritan to keep harmful chemicals out of your beer Provides the look and weight of a glass beer mug without the fragility Showcases the taste, clarity and color of beer or any beverage just like glass