Aero Comfort Technology™ Advance your strides in groundbreaking runners' comfort with Skechers Aero Spark™. This innovative performance style lace-up has been granted the APMA Seal of Acceptance and is made for versatile daily running. Featuring a lace-up breathable engineered mesh upper with our removable Arch Fit® insole system, HYPER BURST ICE™ cushioning with HYPER ARC® technology, a carbon-infused H-plate for next-level energy return, plus a durable Goodyear® Performance Outsole. HYPER BURST ICE cushioning features dual-density HYPER BURST technology for a soft and stable run Carbon-infused H-plate delivers exceptional stability and energy return with an ultra-high stiffness-to-weight ratio Patented Skechers Arch Fit insole system with podiatrist-certified arch support, developed with 20 years of data and 120,000 unweighted foot scans Removable insole helps mold to your foot to reduce shock and increase weight dispersion Goodyear Performance Outsole delivers enhanced traction, stability, and durability.