Light and dry our polypropylene quattro socks are made especially to feel light on the foot and to keep your foot dry the yarns absorb no moisture so your foot stays dry for the entire ride these socks are ideal for use under booties in the rain since they dry out quicker after it stops raining as with all castelli socks weve obsessed over the compression cuff and midfoot band so everything feels just right features polypropylene yarns for moisture management mesh construction on bot