The all-mountain performance boot for the adventurous rider. The versatile SYNAPSE features a premium construction and a lightweight Response Liner that breathes when feet overheat and helps defy the cold weather. Loaded with tech for traction, support, and a custom fit right out of the box.ResponseBuilt with a lightweight, breathable and fully customisable liner for the best in foot envelopment and comfort.Fit Built to allow more room in the toe box for riders with wider feet. Traction Trek EC+ outsole has been developed to offer the best of touring: High traction specific design and maximum dampening, inspired by hiking boots. Lacing System: PowerlockWidth: WideFlex: MediumCustomizable: 4/5Support level: 4/5Response:Fully heat-moldable liners featuring Ultralon Performance foams that offer support and comfort where you need it most. Response liners also feature our new perforated Quickdry Insole to keep your toes dry. Heel Grip:An inner zone on your liner dedicated to keeping your feet and socks firmly in place, all day.Full Custom Fit:Heat moldable multidensity foams throughout the entire liner.Ortholite C3: A dual density insole featuring a molded heel cup for all day comfort and a precise fit.Quickdry Insole:A Salomon exclusive feature that speeds up the drying process to keep your toes dry and comfortable.Trek EC+: High stability outsole featuring a Salomon exclusive technology that combines the rebound of Energy Cell+ and the stability of our VIBE compound. Powerlock:A Salomon standard and a pioneer in lacing systems. Powerlock is the system of choice for our responsive boots : powerful, zonal, easy to use and lock down. Featuring a criss-cross locker on the tongue and anti catch hooks on the upper.