Multiple Pockets: Includes multiple exterior pockets for organizing small items and accessories. Durable Construction: Crafted with rugged materials and reinforced stitching, ensuring long-lasting performance for outdoor adventures. With its rugged construction and convenient features, this cooler backpack is an essential companion for picnics, camping trips, or any outdoor activity where you need to keep your drinks cool and within reach. The 4N26 is a 1-channel Phototransistor Output Optocoupler with base connection . It consists of gallium arsenide infrared LED and a silicon NPN phototransistor This backpack inner made with 600D material and thick insulated foam, Thermal lining which can keeps contents warmer, and cooler for longer when used with... PSC 22 Backpack Soft Cooler | USA Insulated Cooler Backpack: This Caterpillar 28 CAN cooler backpack features thermal lining which can keeps contents warmer, and cooler for longer when used with an ice block (not included). Designed with durable materials and a spacious interior, this backpack can accommodate up to 28 cans or bottles, keeping your beverages chilled for hours. Adjustable padded shoulder straps and a reinforced back panel offer comfortable carrying, even when fully loaded. Convenient Carrying: Equipped with adjustable padded shoulder straps and a top handle for comfortable transportation. Catergator Cooler Catcaterpillar 28 Can Insulated Cooler Backpack Gray Yellow Backpack Cooler Warmer Cooler Insulation Bag Grocery Backpack