Disposable Boxer Briefs. cotton-polyester blended fabric, soft and comfortable, good elasticity, and very comfortable to wear. The disposable underwear can be worn once and thrown away. It is very practical and a necessity for our women’s daily life. This disposable underwear is available in 4 sizes. L, XL, 2XL, 3XL. It’s lightweight and compact, saving space. Contour Pouch Design The 3D pouch can make your package more comfortable without any sticky and holds the boys well.