Helly Hansen. The Swedish company Helly Hansen make a whole range of quality outdoor clothing, and they are renowned for producing the best base layers on the market. Using Lifa technology, Helly Hansen's Helly Dry baselayers are the top of choice for runners up and down the land, whilst the merino wool/polypropylene mix their Helly Warm thermal tops, helps to keep you warm and dry in cold conditions.
Hydration
