O'Neill Reactor Surf Boots are expertly designed to deliver traction and protection on wet surfaces. Color: Black and Coal. Unisex. Womens Size 11 US/ 44 EU Men's Size 9 US * Lightweight neoprene mesh upper for drainage.  * Durable, rubber, ergonomic flex sole.  * Slip-on design w/heel tab.  * Unisex sizing.