Laksen Clisham Long Johns are very comfortable stretchy ultra light Merino Wool long johns with fly base layer made from the finest Merino wool and silk for the perfect luxurious soft combination next to your skin. Merino wool has natural anti bacterial properties which help keep these Lomond base layers odour free while wicking the moisture away from your skin to keep you dry and comfortable. The silk fibres help the fabric glide over your skin when active with out causing chaffing or chaffing when active. This durable Clisham base layer collection is so light and comfortable you wont even know you are wearing them under your clothes. There is also a Clisham Long Sleeve & Short Sleeve Tee for complete protection. See washing Instructions Available in S - 4XL Size: S, M, L, XL, 2XL, 3XL, 4XL