Product group Linnox products have Finnish sizes, made and designed for the Finnish natural conditions and social life. Linnox prodcucts are economical, light and warm; easy to handle - dry first in air for a few times, then wash it. No need to wash after sweating immediately. Save energy and water. Linnox has several product groups made from different fabric as following: 1. 100% silk Jersey This product group has charactors of light weight, warm and breathble. Long undwear suit outdoor use, i,e, nordic walking, hiking tour, biking, hunting, motor biking, boating, travelling, house riding, as well cross country ski. 2. 100% silk 2x2 rib This product group made from100% silk 2x2 rib fabric which is very flexble, thick, warm and breathble. But not so smooth like jersy and interlock. If you have skin problem, then better not choose this group. 3. 100% silk interlock This product group suits colder wearther ie. -5C since the fabric is thick, warm and breathble, but not flexble. Long undwear suits more for motor biking, sailing, hunting, downhill ski. Weather below. 0C 3. 100% silk 2x2 rib This product group made from100% silk 2x2 rib fabric which is very flexble, thick, warm and breathble. But not so smooth like jersy and interlock. If you have skin problem, then better not choose this group.