The importance of dressing correctly during outdoor activities can not be emphasised enough. And it always starts from the inside. The base layer you dress in will dictate how comfortable you are during the day. The LOC Merino Wool undergarment system is developed and thoroughly tested by us during real fishing situations in all weather conditions. Our Merino Wool undergarment system is specifically developed to be used inside our waders in order to get the most out of them (but it can of course be used in all outdoor activities). 98% merino Wool 17,5 microm , 2% ElastanA(R). Fabric weight: 195 g/m2. Naturally odour resistant. Tight, comfy fit. Soft , stretchy and warm. 100% Mulesing free wool. Oko-tex Certified, no health hazards (onlygood stuff). Fabric made locally in Sweden. Sewn in the EU