Mack Weldon Silver HD Boxer Brief Mens Small Forest Biome NWT One Pair The product is a pair of Mack Weldon Silver HD Boxer Briefs in size small, featuring a solid green color known as Forest Biome. Made of a blend of spandex, nylon, and modal, these boxer briefs have a classic style and come in a pack of one piece. The brand, Mack Weldon, is known for its quality and attention to detail, making these underwear a comfortable and stylish choice for men.