Caddis Sports Cobalt Coolers offer substantial ice retention, while discarding the excess weight and bulk of higher-retention "super coolers." The result is no-hassle back-saving mobility for easier transport, storage, and use. Up to 5 days ice retention rating Easy-close lock-down latches Waterproof, Air-tight gaskets and seals No-fail hinges Tie-down slots Lockable lid with built-in bottle opener Non-skid feet Rapid drain system Removable tether handles Compatible with dry ice for even greater cooling capability