No benefit has been reported from using special mattresses. Soft, jersey-knit sheets are found to be soft and comfortable. Some parents use satin sheets because they are slick and reduce friction. One complaint about satin sheets is that if blood or drainage becomes hard upon drying on the sheet; thus, if the baby rubs against it, a blister may form.
If there is a wound on the back of the scalp, some parents have found it helpful to apply a thin layer of Vaseline to the sheet in an effort to reduce friction. This practice can be harsh on the washing machine, but protecting the baby always takes precedence.