The particular type of crib mattresses named pocket spring mattress is specialized for balancing the body weight of the baby. (topcribmattressreviews.com)
It features 1000 individual pocket springs, each individually wrapped in fabric. (idealhome.co.uk)
You get support in all the right places thanks to the individually wrapped pocket springs that work independently and closely to follow the contours of your body. (idealhome.co.uk)