Details The lightweight men's Salomon Sonic 3 Accelerate training shoe is packed with features designed to optimize your speed training: Optivibe reduces vibrations to limit muscle fatigue, a geometric decoupling axis promotes a quick forward transition and road-specific Sensifit fits your foot like a glove. Whether it's track workouts, strides, or a quick temp run, the Sonic 3 Accelerate is the perfect tool in your kit for building speed. Upper Engineered Mesh: Engineered mesh is a unique mesh structure that varies the weave to offer more support and durability or flexibility and breathability, according to the specific needs in different parts of the shoe. OrthoLite® Impressions tongue: OrthoLite® Impressions makes an extremely comfortable first and lasting impression. This slow recovery foam is made with 50% bio-oil content. Impressions compresses to take the shape of the foot over time to create a customized, comfortable fit. Featherlight collar: The seamless Featherlight Collar is soft, comfortable and minimalist without sacrificing fit. Internal SensiFit™: Invisible from the outside, the Sensifit cradles the foot from the midsole to the lacing system, providing a secure, snug, and virtually customized fit all around the foot. Midsole Optivibe™: A combination of foams, one to dampen, one to propel. This was developed to reduce vibration upon foot strike aimed to decrease muscle fatigue without affecting the overall ride Molded OrthoLite®: OrthoLite® insole technology provides superior cushioning, unmatched comfort, breathability and durability, and is one of the most cost-effective ways to upgrade the comfort and performance of your footwear. Outsole Geometric Decoupling™: Geometric Decoupling™ works with the foot to allow smooth and efficient load guidance, creating an effortless and efficient heel to toe transition. Heel N/A Forefoot N/A Offset 6 mm Width D Weight 223g (7.87oz) Salomon Sonic 3 Accelerate Men's