UnderWunder

UnderWunder makes ultra thin perspiration protectors that stick inside the sleeve of your garment and absorb sweat before it reaches the fabric. They're made from a premium cotton blend, soft, breathable, fragrance free and hypoallergenic, and they come in white or black to suit light or dark clothing. Each one gives 6 to 8 hours of protection, and they save a lot of dry cleaning. There's a version for women and one for men.