Wetsuit boot

In scuba diving a bootee or bootie or wetsuit boot is a thick sock-like garment made of wetsuit material. They serve the dual purpose of protecting the diver's feet when walking out of water, with or without a wetsuit, and keeping their feet warm underwater.

Bootee thickness is proportional to how cold the water dived in will be and can be above or below the standard of 5-6 mm of neoprene. The leg of the bootee usually has a zipper down one side.

It usually has a reinforced sole for walking. This sole should not be so thick that one is unable to get a diver's fin on over it: there are makes of bootee whose soles are reinforced with rubber hobnails which could not be worn with fins and were likely intended for .

Divers wearing bootees usually need fins with a foot part larger than with bare feet.

As a result, divers in warm water who do not wear a diving suit, sometimes wear bootees so they can wear bigger fins.

Diving bootees are typically only intended for wear with open-heeled fins (with a buckle) and usually do not fit into full-footed fins. Much thinner neoprene socks are sometimes used with full-footed fins, but more for the purpose of preventing chafing and blisters, rather than warmth.