This fabulous mid layering jacket provides exceptional warmth & moisture control for all winter mountain activities. The Boulder Jacket is made from Polartec Thermal Pro which is a high loft deep pile fleece with air permeability making it extremely breathable. The Boulder works best under a water/wind proof outer shell as it is susceptible to air penetration in windy conditions. The Boulder offers incredible levels of warmth in relation to its low weight, wicks moisture & dries exceptionally quickly. Polartec Powerstretch fabric is used on the cuffs, side & underarm panels & around the neck to provide unrestricted movement & a nice contrasting finish. Thumb loops are included on the cuffs to ensure the vital wrist area remains warm when scrambling & climbing. All seams are flat locked for extra durability & the neck is nice & high to seal out the cold. The Boulder is about the best performing mid layering fleece that can also be used as a fabulously warm après activity cosy jacket.