Less Zip and more Sip with Core's New ClimaKeep(TM) Performance Coolers. Built with the same industry leading performance and quality you expect from Core, with the added convenience and easy access of a magnetic sealing lid. The ClimaKeep(TM) easy flip-top magnetic lid keeps the heat out while giving you quick access to everything inside. This patent pending feature provides a dependable temperature seal even when the cooler is unzipped, enabling longer ice retention and easy one-handed access. Coupled with improved organization, a tough, abrasion-resistant shell, and a leakproof guarantee, they'll be keeping things cold for years to come. Features: EASY TO OPEN ACCESS : Enjoy less zip and more sip with Core's CLIMAKEEP(TM) magnetic seal. This innovative feature ensures your cooler stays closed, locking in cold air even when fully unzipped. Seamlessly access your food and drinks with one-handed ease SUPERIOR ICE RETENTION : CORE HYPERCOLD insulation is designed to maintain ice and keep items cold. With high-density EVA foam and reflective PET film, Core's cooler ensures your contents stay cold for up to 3 days LEAKPROOF AND WATERPROOF : With a waterproof zipper and fully welded construction, this cooler can float in the water while creating a watertight seal to keep your contents dry and secure DURABLE CONSTRUCTION : Made of premium abrasion-resistant materials and high-quality reinforced fabrics, the TPU shell will withstand wear and tear, ensuring the tough exterior is ready to handle any adventure PORTABILITY : Designed as a backpack, transport is easy for any adventure. The waterproof dry zone front pocket organizes essentials, while the true-stretch side pockets and built-in bottle opener provide quick access to snacks and drinks. This backpack cooler is perfect for carrying wine bottles!