The Topo Athletic Ultrafly 3 road shoe is a neutral running shoe that offers multiple levels of cushioning and guidance for reduced stress during repetitive impact from road running. Stack Height (Heel / Forefoot) : 28mm / 23mm. Heel-to-Toe Drop : 5mm. Lightweight, breathable mesh upper provides a comfortable second-skin fit and feel. Padded tongue and collar. Traditional lace-up closure. Removable insole. ZIP FOAM midsole compound is springier than EVA and provides more rebound over the life of the shoe. Ortholite anti-compression footbed with odor control technology. Roomy toe box allows the toes to spread and splay naturally for greater foot function and comfort. Durable rubber outsole for exceptional traction. All Topo shoes fit snug through the midfoot and heel to allow space for the toes to spread and splay, reducing that sloppy or disconnected feeling often associated with wider-fitting footwear. Imported. WARNING Measurements: Weight: 9 oz Product measurements were taken using size 9.5, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.