CRAFTED FOR CONVENIENCE: With the whole set weighing only 0.35 pounds and measuring 3.7 x 3.7 x 9.4 inches, the Nesting Red Wine Glass Set is lightweight and each glass can hold up to 15 fl oz., making it easy to take wherever you go. COMPACT DESIGN: The unique stem design unscrews to allow the base to be compactly snapped into the bowl for easy storage into a backpack or box. INDESTRUCTIBLE MATERIAL: Made of copolyester plastic, these wine glasses provide excellent impact resistance and are suitable for both warm and cold beverages. ADAPTABLE TO ANY OCCASION: The Nesting Red Wine Glass Set can be used on a campground, during a concert, or just in your backyard. LIFETIME PROMISE: GSI Outdoors spent over 30 years building quality, performance products and stands behind them 100%. GSI Outdoors warranties all products for the original owner against manufacturing defects for the lifetime of the product.