Shorter, colder days don't have to keep you inside training on a treadmill. Instead, slip into the Sonic RA 2 Nocturne Running Shoe and head out the door to get your run in. Equipped with features to protect against the cold, wet, and dark, the Nocturne doesn't allow winter conditions to get in the way of your runs. To start, the Nocturne features an innovative Gore Invisible Fit membrane. Like other Gore-Tex membranes, Gore Invisible Fit provides you with 100% breathable, waterproof protection. Unlike other Gore-Tex membranes, Gore Invisible Fit is constructed right into the upper of the shoe instead of as an internal bootie. This keeps the shoe feeling seamless comfortable. Additionally, a lightweight wool liner helps to keep your feet and ankles warmer when the temperatures are low and reflective elements all around the shoe provide you with visibility after the sun goes down. In addition to weather protection, the Nocturne provides you with a comfortable, responsive ride for your training runs. The Nocturne is constructed with Salomon's Vibe midsole that absorbs impact and offers energy return to keep your long runs on pavement from being too hard on your joints. This midsole is enhanced with a molded OrthoLite footbed that in addition to providing added cushion, manages moisture to keep the climate inside of the shoe comfortable as you push yourself to a new PR. Finally, the Nocturne has a sticky rubber sole to provide you with confident grip across wet, dry, and slick surfaces so you can confidently run through the cold, dark months.