Stretch side panels give you more mobility and better layering comfort than other thermal layers.
While it's significantly heavier than Spyder's Dry W.E.B. turtlenecks this Core Sweater is an ideal middle layer in frigid conditions and a practical outer layer in sunny spring weather. It features a straight standard cut that even flares slightly along the hem for easy layering. The straight cut lets guys add lighter wicking and silk base layers beneath their middle layers without the hassles of extra fabric and binding. Stretch fleece side panels enhance your range of motion better than traditional pullovers and an internal drawcord at the hem helps seal in the thermal warmth. Spyder used an anti-pilling fleece backing throughout the Core Sweater so it might even look better than you do after several seasons of hard play. If you're looking for a Dry W.E.B. turtleneck with a heavier fabric weight check out Spyder's Service Dry W.E.B. Turtleneck-Heavyweight.
Buy the Spyder Core Sweater at Altrec.com. Orders over $45 qualify for free shipping.