WineTanium Unbreakable Highball 17 oz Plastic Glasses - 100% Tritan - Shatterproof, Reusable, Dishwasher Safe - Set of 4 Shatterproof, unbreakable glasses  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 drinks Crystal-clear to showcase the clarity and color of scotch or other drinks, just like a fine glass 17 oz size is perfect for virtually any type of drink