Long time Insulation: The beer cooler sleeves are made of high-quality neoprene, a material known for its excellent insulation properties. The neoprene material not only insulates your beer bottles but also prevents condensation buildup on the outside..Versatile and Portable: Take these beer cooler sleeves with you wherever you go. Whether you're at a bar, hosting a backyard BBQ, going on a picnic, or enjoying outdoor activities, these sleeves are a must-have accessory to keep your beers cold and refreshing..Anti-Slip Function: The beer cooler sleeves feature an anti-slip surface that provides a firm and comfortable grip. You can enjoy your drinks without worrying about the bottles slipping from your hand or table..Quantity: Enhance your beer-drinking experience with the 2PCS Beer Cooler Sleeve. The neoprene material is easy to clean and maintain. Simply hand wash or machine wash the sleeves, and they will be ready to use again for your next beer-drinking occasion..Perfect Fit: Designed to fit standard 12oz (330ml) beer bottles, these beer bottle cooler sleeves provide a snug and secure fit. The zip-up design allows for easy insertion and removal of the bottles while maintaining a tight seal.