beach cooler backpack

Exteriors commonly use polyester (including recycled polyester), vinyl/PVC, or TPE. Interior liners and layers are typically PEVA, polyolefin, EVA, or polyethylene.

Many models use sealed or heat-pressed construction and PEVA waterproof linings to contain meltwater. Listings often highlight easy‑clean, leak‑resistant interiors designed to protect the bag and its contents.

Care is generally simple: most listings recommend spot‑cleaning or wiping the interior and exterior. Some models also note that rinsing with water is acceptable; always follow the manufacturer’s care instructions.

Typical listings claim cold retention of up to about 12 hours. A few models report longer performance—one listing notes ice retention for up to 2 days.