Polypropylene Gloves Sherpa's polypropylene gloves are lightweight, compact and are brushed on the inside for additional comfort and fleecy warmth. They are compact, therefore they are also excellent liners for ski gloves, or climber's mitts in colder conditions. They dry quickly when wet and will not absorb perspiration. Made from brushed polypropylene these liners will last a lifetime without wear and tear due to the materials durability and strength. Polypro Glove Care Machine wash. Do not tumble dry or dry clean.