Siren 4 Thermo Chelsea Boot Wmns 750 Canteen keeps drinks icy cold

Canteen keeps drinks icy cold for 25 hours or nice and hot for up to 12

Leak resistent

giving you that technical comfort you need on the slopes

Elasticated back belt with drawcord

Weather-Proof Shell with Warm Recycled Down Insulation

Siren 4 Thermo Chelsea Boot Wmns 750 Canteen keeps drinks icy coldWith 25 years of Merrell's women's specific fit, the Siren 4 Thermo is uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability even on the longest hikes with 200 grams of added insulation for warmth and protection. Now equipped with SOLARCORE insulation, lightweight insulation material initially designed for NASA, you never have to worry about warmth. Merrell waterproofing on the upper will keep