MaxCold Ultra& insulation: 20mm HDPE foam keeps food & drinks colder for extended periods of time Durable, welded exterior features a 600D coated polyester material that provides overall dirt-, sand- & water-resistant protection for long-lasting use Super spacious zippered main compartment opens wide for effortless packing Smooth-glide, dirt- & water-resistant zippers (main compartment & front pocket) with pulls help keep liquids contained & make zipping/unzipping a cinch — without the need for zipper lubricant Features multiple carry options: quick-grab handle at each side (which can double as tie-down loops), dual top webbing straps (that secure together with a padded, snap-button closure wrap) & removable, adjustable shoulder strap for crossbody, hands-free carrying