20 Hours Retention: Sparter backpack cooler is insulated with thickened 8 mm foam, together with advanced silver PEVA seal to keep beverages cool up to 20 Hours throughout the day for beach picnic, hiking, camping, trip, boating, baseball / golf and work.

Leak-proof Liner: Our cooler backpack liner adopts high-tech seamless hot pressing process for leak-proof; The zipper is not leakproof, please be careful not to tip over when using it.

Double Insulated Compartments & Multi-Pockets: Featured two insulated compartments for cooling drinks & dry foods, front big pocket and two side pockets for your snacks, phone, wallet, and other accessories. A bottle opener included for more convenience.

Water Resistant & Lightweight: Our cooler bags are made of high-density scratch-resistant nylon with extra waterproof PU coating; Lightweight & portable design with padded shoulder straps and back, more comfortable than carrying a heavy big cooler.

33 Cans Large Capacity: Measures 17''H x 10.5''L x 7.5"W and can hold up to 33 cans (330ml), roomy enough to pack meals, beers, tall beverages, snacks and other necessities.