When you need warmth, stretch, and no bulk, the Endurance Active Full-Zip Mid-Layer is your go-to layer. Built with breathable waffle fleece and a high stretch shell, it moves with you whether you're hauling, climbing, or layering under outerwear. With bonded fleece on high-friction areas, elastic cuffs, and zippered hand-warmer pockets, it packs comfort and utility into a lean, hardworking package. Perfect for active cold-weather conditions where mobility matters as much as warmth. Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.