These are the Bare Trek Drysuit Rugged Boots Booties to Use with Bare Drysuits They Feature: Designed to be used with all BARE drysuits equipped with compression-resistant soft boots Excellent support for rocky shore entries, boat decks and boat ladders Velcro ankle closure, thumb loop and fin tab Durable toe and heel cap PLEASE NOTE: These are sized to wear over soft boots (i.e. these are made larger, to accommodate wearing soft boots under them - if you are using size 10 soft boots, order size 10 trek boots) This fantastic pair of boots is a great addition to your drysuit. Protect those feet on rocky bottom sea floors and keep them warm when paired with soft boots.