We have an extensive range of thermals and baselayers from Smartwool this year, one of the leading brands in the design and manufacture of performance baselayer clothing. Smartwool use merino wool in all of their clothing and these fibres really are one of natures finest materials. Moisture management is one of the key properties of Merino wool and as it happens one of those most important elements in a baselayer clothing. When undertaking physical activity, especially outdoors in cooler conditions, it's imperative that moisture is wicked effectively away from the body so that the wearer remains warm and dry. An additional benefit of Merino but one that's certainly not to be sniffed at (pun definitely intended) is the natural odour resistant properties that these fibres have. With that in mind you might also want to consider a comfortable and odour resistant pair of Smartwool hiking socks!