If you're looking for a natural running experience that doesn't sacrifice cushioning in the process, the ASICS 33-M is the running shoe for you! Seamless upper reduces irritation caused by traditional seams, so you can focus on your run. ComforDry Sockliner provides extra cushioning and anti-odor protection. Natural33 Last mimics the shape of your foot for a secure heel fit and natural movement. Solyte midsole for enhanced cushioning and durability. 4mm heel-toe drop. DuraSponge blown AHAR rubber outsole for traction and durability. Wt. 10.9 oz.