Durable Merrell Aeroblock™ textured fabric combines with a soft Merrell Conductor fleece interior to make the Perimeter your ideal alpine companion, blocking wind and keeping you warm in variable weather. Merrell Aeroblock™ provides high wind-resistance and breathability. 100% Polyester. DWR finish. Merrell Conductor thermal fleece inside provides versatile heat retention in varying conditions. Bonded Merrell Conductor fleece backing. Hanging visored hood. Reverse coil hand and chest pockets. Embroidered chest logo.