Wine Glasses by Vinotrek - Unbreakable Insulated Stainless Steel Stemless Wine Glasses for Wine to Go on Outdoor Adventures (Set of Two) Crafted of superior 18/8 food-grade stainless steel Durable shatterproof construction for outdoor use Double wall insulates wine from warmth of your hand Wide bottom tip resistant design for use in the outdoors Easy to clean electro polished interior