Merrell Siren 4 Thermo Demi Wos WP J036750 filter Winter Boots hardworking and smart – Redback Fit Designed with a hardworking and smart – Redback boots embody the best of the Australian work ethic A stitching detail on the back adds an extra cool design touch and stability even on the longest hikes with added insulation for warmth and protection FEATURES • Waterproof membrane seals out water and lets moisture escape • Protective shell keeps feet dry • Waterproof suede leather upper • 100% recycled laces and webbing • Bellows tongue keeps out debris • 100% recycled fleece lining • 100 grams Primaloft® Gold Eco Series synthetic insulation • Rock plate for protection • FloatPro™ Foam midsole for lightweight comfort that lasts • Vibram® Icetrek outsole designed to provide the improved grip on very cold