Designed for for aerobics, court sports, running, weight training, racquet sports and walking- these ROCK for RUGBY. We have sold them since our beginnings in the laste 90s and folks love them. We love them. 100% recommended. Cross Trainer style includes additional padding in the forefoot area and an additional nitrogen-injected neoprene plug to reduce impact in the heel strike area. Available in Men's sizes 6-15, Women's sizes 5-12