Zelta 12oz Unbreakable Silicone Wine Glasses Beer Tumblers Cup, Stain Resistant Seamless Clear Shatterproof Drinkware (Set of 2) Made of non-stick clear silicone material, odorless, flexible and unbreakable Squish them down to fit inside a picnic basket or purse, shatter proof Great for outdoor use like in the beach, picnic, boating, camping pool parties Avoid gripping too tight when the glass is full; Ideal to fill with all kinds of beverages 3.35" x 4.1", 400ml (12oz) easy to store and carry; Dishwasher safe