Our 100% Australian Merino long sleeve crew top provides superior performance as your thermal layer undergarment for cold weather activities. Made from 100% natural Merino wool, it has the ability to efficiently regulate body heat by trapping warm air. Merino also absorbs perspiration away from your skin so you won't feel damp during activity. It is highly breathable, quick drying and resists odour and bacterial build up, keeping you feeling fresh. A close fit delivers next-to-skin comfort and the extra core warmth you seek.