Shatterproof Glasses: 9 Pack 9 ounce, Unbreakable Plastic Water Tumbler. GLASS ALTERNATIVE: These beautifully designed and polished tumblers look and feel like glass, while adding a stylish classic touch to your table setting. They are great alternatives for glasses. SAFE & STURDY: These tumblers are Microwave Safe, Break Resistant Material. NO DISHWASHER. NO LEAD. NO BPA. GREAT FOR: Great for Cafe, Restaurant, Self-service areas, Party, Kids, Home, Event, Patio, Poolside, Picnic, and other outdoor use.