You will now see a lot of goalkeepers wearing ‘baselayers’; a special type of top worn by sportspeople to keep themselves free from sweat. Rugby players, footballers and other types of athletes all wear them, and they are now becoming popular in hockey. The clothing is used to keep the goalkeeper cool and dry; reducing humidity and wicking away sweat from the body. Canterbury is one of the most famous brands. Baselayers are simply worn under the chest pad. Instead of wearing a t-shirt, you just wear the baselayer. Baselayers are long-sleeved and will keep your arms warm in the cold weather. Baselayers are easy to get hold of. Sports stores stock them, as do some camping outlet stores (they do a different type designed to keep you warm as well as sweat free, which is useful for the winter months!).
Simply put, they are a good way of keeping cool when you are working up a sweat, although that’s not to say your muscles won’t keep optimally warm!