Gill Aero zip-up boot in Men's size 7.5-8 ​/​ Women's 9-9.5. Gently used condition. 5mm neoprene, Velcro strap around ankle, waterproof zipper. Retails new $75+. From website: The Gill Aero Boot is the perfect all rounder for Dinghy sailing. A wrap-around natural rubber sole provides enhanced grip for all conditions. Easy step in Side zip entry and a wide supportive ankle strap at the top ensures a secure and stable fit.