We would usually recommend a Dacron wrap and with stockinette for cushions, depending on the desired finished look and the use of the foam. Dacron is a polyester wrap, designed to create a lovely rounded finish on the cushions. Stockinette helps to reduce friction between the cover and the foam, holds the Dacron in, and makes it easier to fit the cushion into the covers again.
There are different weights available, we would suggest the 14oz to be used with leather furniture and sometimes feather replacement, whereas the 9oz is more commonly used with foam replacement. If you are undertaking your own DIY upholstery project we can supply you with the Dacron only if required.