These thicker garments are used as intermediate layers to increase heat insulation between the base layer and the wind and water resistant outer layer. The mid-layer garments are usually used at lower temperatures and lower activity levels.
Full zip sweater has high, reinforced collar and cuffs with thumb holes. The back is longer to avoid gaps, and the collar has the Woolpower logo knitted in.

Material:

69 % Merino wool
29 % Polyamide
2 % Elastane