Merrell Women's Siren 4 Thermo Mid Zip Waterproof Color: Black Size: Women's 8.5 Does not have original box. A winter-ready boot with a women's-specific fit that combines function and all-day wearability. 200 grams Primaloft® Gold Eco Series synthetic insulation Solarcore® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin Waterproof full grain leather upper, complete with a waterproof membrane seals out water and lets moisture escape Vibram® Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces Heavy-duty, Waterproof, YKK zipper for easy on and off Protective and abrasion resistant rubber toe cap Cleansport NXT™ treated for natural odor control FloatPro™ Foam midsole for lightweight comfort that lasts Waterproof full grain leather and knit upper 100% recycled laces and webbing 100% recycled fleece lining 100% recycled mesh footbed cover 5% recycled PU removable footbed