Ultraz Winter Socks P1 blackSeries

The Ultraz Winter Socks P1 in the blackSeries colourway rebuild ASSOS's deep-winter Ultraz sock on the refreshed P1 platform. A wool blend brings insulation and natural temperature management for the coldest training days, and the Ultraz grade puts this sock near the top of the range's temperature ladder — warmer than the Winter Socks P1, with only the FUGU treatment above it. Distinct from the original-chassis Ultraz Winter Socks.