Some of the toughest coolers you'll find anywhere, they're loaded with features, like scratch-resistant exoskeletons and durable, large-knuckle integrated hinges with stainless steel pins for a lifetime of easy opening. They also incorporate catch-free rubber latches that are recessed to keep them securely fastened. Liners and cutting boards contain antimicrobial additives, too, to resist odor, mold, and mildew, while UVGuard material protects the marine versions from the sun's damaging rays. And they'll keep ice up to 10 days (larger models). Threaded drains for connecting hose are standard as well.