SaniSquares are packaged in small and large sizes. The large disposable squares are specially designed for those on the go who change clothes in public places. The large squares have a non slip feature that allow you to safely, yet quickly, change your clothes.The small squares are designed to protect your personal items in places such as hotel vanities and exercise facilities. They can also be used for sanitary protection on airplane headrests and pillows, as well as headrest protection in public settings such as theaters...or anywhere a sanitary shield is needed!Also avoid fungal infections of the scalp, tinea capitis, that can be transferred by sharing pillows. Tinea capitis fungal spores can spread easily and can live on objects such as cushions and headrests for months.