Any experienced cyclist knows the value of a good base layer. It will keep you cool on scorching hot cols in July and warm on freezing descents in January. A good base layer helps regulate body temperature whatever the weather, transfering moisture from the skin and proving a vital aid to performance. Rapha base layers are made from 100% merino wool and are naturally anti-bacterial and odour resistant. Wicking moisture vapour extremely quickly, they are soft on the skin and itch free. Rapha's merino base layers come in three styles; sleeveless, short and long sleeve. All the seams have flatlock stitching so they won't chafe and are positioned behind the shoulders to avoid bag or bib straps rubbing while cycling. The base layers are close fitting and cut long at the back for a better fit on the bike.