DetailsLasting Size Chart Men's long sleeve t-shirt made of 100% sustainably sourced Australian merino wool. Made of the finest quality 16 micron wool, it will not scratch or itch. The wool is highly antibacterial and ensures moisture wicking, so you will feel dry and stay odor free even when you perspire. It is suitable for any sports activity or as casual wear. Material: 100% Merino wool 16 microns.