1. Safety: These wine glasses are made of 100% food-grade silicone, BPA-free and eco-friendly. Never worry it will break. 2. Eco-friendly & Odorless: Outdoor rubber wine glasses are made of food-grade silicone, BPA-free, non-toxic, no chemical reaction and odorless, eco-friendly, reusable. 3. PORTABLE: These Silicone Wine Glasses are perfect for Wine on the Go! Bring them to any outdoor event such as a: Pool, Beach, BBQ, Pool, Lake, Park Picnics, Camping or any Weekend Trip or Vacation! 4. Awesome Stemless Design: Stylish glass set for all beverages such red or white wine, soda, cocktails, mint julep and whiskey. Use as party cups, champagne flutes or beer glasses 5.Product size: height 10.6cm, caliber 5.5cm, bottom diameter 4cm, cup thickness 2.7mm Capacity: 301-400ml