Designed with the technology you need to tackle the challenge of winter weather, the Fluorecein Shell 8 Waterproof Winter Boots provide superior insulation and waterproof protection for cold weather wear.. . This product will be shipped directly from Merrell and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. Waterproof PU coated leather and fabric upper for added protection. Traditional lace closure. Waterproof seam sealed construction. Faux fur collar for added warmth. M SelectTM DRY waterproof technology wicks moisture to keep feet dry. 400g lightweight M SelectTM WARM insulation for warmth without the added bulk. Bellows tongue prevents water, dirt and debris from entering the shoe. Breathable mesh lining for added ventilation. EVA molded footbed for added support and stability. Molded nylon arch shank. Merrell air cushioning in heel provides shock absorption and added stability. M SelectTM GRIP technology in outsole provides traction and grip on various terrain. Compatible with snowshoes. 5mm lug depth.