Why Sherpa Vest Getting your best friend all bundled up is a breeze with this ultra-cozy sherpa vest. The fuzzy fleece material of this winter staple traps heat, making it perfect for keeping your pooch warm and toasty all season long—no matter how low the temperatures drop. The material also has a slight stretch to it, which helps ensure a comfortable fit every time. Looks like winter may have met its match. Pictured Dogs Measurements Loki, a Shiba Inu wearing size L with following the measurements Chest - 21 inches. Length - 16 inches. Weight - 19 lbs. Height - 14 inches (measured from feet to back).