KXSS - One Pair Mens Briefs If you're looking for a pair of comfortable cotton boxer shorts that are great for everyday wear, then you need KXSS! KXSS is a brand that makes high quality men's underwear. They have one pair of briefs available in black and white. These are made from 100% cotton, so they will keep you cool and fresh during the summer months! The designs are simple but stylish, with a large KXSS logo printed on the waistband. The waistband is also elasticized for added comfort and fit.