Merrell Barefoot Boots - Merrell Performance Footwear, Sz. 9.5, Black/Ultra Marine with Primaloft 80 gram insulation and drawstring. Merrell is a well-known brand for outdoor and hiking footwear. They are known for their comfort, durability, and performance in various terrains. Merrell Barefoot Boots are designed to mimic the shape of the human foot and keep it in the position it would be in without shoes.