Asics - 15-50 Spikeless (Grey/Dark Green) - Men's: For men's and women's sizes, please select 1 size up from your normal size (If you wear size 9, please choose size 10). ; Aggressive cross country spikeless shoe for the athlete who expects to win and who requires a lightweight and flexible shoe to help them cover any terrain. Seamless Upper is lightweight, flexible and able to clean easily. Trusstic System provides midfoot support on uneven terrain. Full Length SpEVA Midsole Material reforms to its original cushioning properties to protect the athlete. Shoe weighs 6.5 oz.