Stay refreshed outdoors with this high‑performance insulated cooler backpack, engineered for long‑lasting cooling for your food and beverages. Built with 8 mm thick high‑density insulation foam and UV‑blocking silver PEVA lining, it maintains chill for up to 20 hours when used properly, perfect for beach trips, picnics, hiking, camping, boating, outdoor sports and everyday work commutes. The interior adopts seamless hot‑press craft for reliable leak‑resistant performance, while the durable exterior combines scratch‑proof nylon and waterproof PVC fabric to resist scuffs and outside moisture. Please note the zipper is not 100% leak‑proof, avoid tipping or flipping the bag over during use. Boasting generous storage, this backpack features 2 insulated compartments that fit up to 33 pieces of 330 ml cans, alongside multiple functional pockets including top zipper pocket, front pockets, side pockets and hidden rear secure pocket for phones and valuables, with an included bottle opener for extra convenience. Designed for all‑day comfort, it comes with thick breathable padded back panel and adjustable padded shoulder straps to cut travel fatigue. The adjustable sternum buckle distributes weight evenly and stabilizes the backpack, and reflective strips on straps enhance safety for night travel. Doubling as a regular travel backpack, this fashionable insulated pack is a wonderful practical gift for men and women for various outdoor and daily occasions. Color: Black.