The L-pillow (pregnancy, breastfeeding and relaxing) already has a cover, but you will need another one if you don’t have the time to wash it in a hurry or if you want variety.
The extra cover is made of ranforce cotton, a denser and more strong material.
It has a string that you can use to shorten the pillow, meaning taking the small pillow out of the cover.
On the outside, it has a hidden zipper, to change the cover easier, but also to keep it completely closed.
You don’t have to worry about special treatments. You can wash it and iron it together with your own laundry, up to 60 degrees.
If you don’t want to purchase a change cover, you should use a swaddle while breastfeeding.