






Warm hiking boots - Women -
The Siren 4 Thermo Mid Wp is a hiking boot for women from Merrell.
This boot is ideal for the coldest hikes. Thanks to its waterproof membrane, you'll never get your feet wet again. What's more, the synthetic insulation PrimaLoft® Gold Eco gives you extra warmth even on the coldest days. The gusseted tongue and haute full-grain leather and wool upper mean there are no external elements to disturb you when you step into the shoe.
The foam midsole FloatPro™ gives you excellent stability and exceptional comfort. What's more, with the outsole Vibram® Icetrek and 5mm studs, you'll have perfect grip even on snow and ice.
The Siren 4 Thermo Mid Wp will provide you with excellent all-day comfort no matter weather!


- Waterproof membrane lets moisture escape
- Waterproof leather upper
- 100% recycled laces and straps
- Durable, waterproof YKK centre zip for easy on and off
- Gusseted flap keeps debris out
- Protective, abrasion-resistant rubber heel and toe cap
- 100% recycled fleece lining
- 200 grams of Primaloft® Gold Eco Series synthetic insulation
- The SOLARCORE® Aerogel insole provides superior warmth underfoot while being extremely flexible and ultra-thin
- 100% recycled mesh insole
- Cleansport NXT™ treatment for natural odour control
- Removable footbed in 5% recycled PU
- Foam midsole FloatPro™ for lightweight comfort that lasts
- Vibram® Icetrek outsole designed to provide better grip on very cold, icy or snow-covered surfaces
- Traction studs Vibram® specially designed to increase traction and eliminate debris at every step
Technologies :
- The Vibram outsole improves grip and stability on rough terrain and provides an optimal balance between performance and durability.