Original Fit has generous space across the forefoot for toes to splay Padded tongue and collar for enhanced comfort 100% recycled plastic laces Direct-attach, air-injected Luftcell midsole for long-lasting cushioning Removable Luftcell air-injected insole for added cushioning KEEN.FUSION construction fuses the upper to the sole without glue for a longer-lasting bond that's better for the planet. Abrasion-resistant KEEN.RUGGED outsole for durable, longer-lasting traction Multi-directional lug pattern provides superior traction Heel-capture system for added stability Stability shank delivers lightweight stability