Acarsan Anti-mite Pillowcase®. The Velfont Anti-mite pillowcase is made of 100% high-quality cotton curl. Incorporates the Acarsan Natural® anti-mite treatment made of plant extracts. It has been scientifically tested and its effectiveness is resistant to washing. Ideal pillow cover for: people looking for protection against mites or looking for a healthy rest. No refunds or exchanges allowed.