These quality cotton rolls are made from 100% cotton, and are non-linting. They are non-sterile, but are made of a virgin cotton, which holds together better and maintains its shape under moisture. Their soft texture is pliable and 20% more absorbent than the leading brand. Defend cotton rolls do not adhere to mucous membranes. They are #2, medium in size 1.5" x .375" (3/8").