Hybrid construction combines light Polarloft insulation in the body with Pontetorto Tecnowool side panels to give enough protection for skinning into a freezing head wind and the stretch required by tenuous climbing. The Men's Transition Jacket also features Mountain Equipment's Alpine fit and articulated, pre-shaped sleeves for excellent mobility.Mountain Equipment have painstakingly developed their Alpine fit. It maps the fabric panels to the body, balancing weight and reducing unnecessary bulk while ensuring comfort and allowing a full range of movement. Innovative shaping between the waist and shoulders leaves the optimal room for layers underneath. A front seam with a reversed camber pulls the jacket inwards towards the body to reduce bulging as you lean over.