The Siren 4 Thermo Mid Zip is uniquely engineered to cradle the distinct contours of female feet, providing ultimate comfort, support, and stability. Keep your feet toasty warm even on the longest hikes with added insulation and protection.
- Full-grain leather upper is durable and waterproof
- Breathable waterproof membrane seals out water and lets moisture escape
- 200 grams of Primaloft® Gold Eco Series synthetic insulation for lightweight warmth
- SOLARCORE® Aerogel insole provides serous warmth underfoot while being extremely flexible and ultra-thin
- Protective and abrasion resistant rubber heel and toe cap
- Cleansport NXT™ natural odour control keeps your feet smelling fresh
- Heavy-duty, waterproof, YKK zipper for easy on and off
- 100% recycled laces, webbing, fleece lining and footbed cover
- Bellows tongue keeps out snow and trail debris
- Thick FloatPro Foam™ midsole provides plenty of cushion and underfoot protection
- Vibram® Icetrek outsole provides improved grip on very cold, icy or snowy surfaces
