Tried on one time in home, new with original box, no tags, non-smoking, smell free home CLEAN. We should slap a warning on these speed shoes! The Vanish Tempo was built to go fast, with rocker shape geometry, a secure fit, and lightweight midsole foam. Made for fast training runs, speedwork, and race day, this shoe has everything you need to unleash your inner speed demon. Altra EGO™ PRO midsole foam is light and airy with slight cushion for lightweight and responsive performance. A breathable engineered mesh upper follows the lightweight formula while the rocker shape encourages propulsion and an efficient toe-off. With zero drop and plenty of room for your toes to move freely, with a snug midfoot, you can move naturally. In the Vanish Tempo, there’s nothing holding you back. Open ‘er up!