Wear it as a mid-layer, outer-layer, overlayer, underlayer or however else you can imagine. The MT500 Thermal L/S has always been a key piece in the mtb riders winter wardrobe and this new version adds a neat fitting hood to its predecessors rich featue list.   Features Insulating main body fabric with good moisture management properties. Critical element protection provided by durable windproof panels on the front torso and sleeves. Internal zipped chest pocket. Large front zipped pockets with glasses wipe. Silicone shoulder prints. Snug fitting, under helmet hood. 90 day Satisfaction Guarantee.