The Ultraz Winter LS Skin Layer P1 is the base layer for the coldest, most extreme winter conditions, with the most insulation of any ASSOS skin layer. Merino wool and a highly elastic synthetic blend provide the warmth, and an ultra-high neck-warmer collar extends the coverage. The textile is soft against the skin and keeps its shape when stretched, so it stays close to the body to trap warmth and move moisture out.
Pairs with


Pas Normal Studios
Mechanism Jersey
£ 100
Base Layer
£ 71 £ 100
The Ultraz Winter LS Skin Layer P1 is the base layer for the coldest, most extreme winter conditions, with the most insulation of any ASSOS skin layer. Merino wool and a highly elastic synthetic blend provide the warmth, and an ultra-high neck-warmer collar extends the coverage. The textile is soft against the skin and keeps its shape when stretched, so it stays close to the body to trap warmth and move moisture out.
Pairs with


Pas Normal Studios
Mechanism Jersey
£ 100



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