Crib Innerspring Mattress - firm 15.5 gauge 260 coil with 6 gauge border rod with organic cotton quilted layer and organic wool quilted layer with Organic Cotton Damask outer. While this crib mattress is the desired firmness for babies, the outer padding has enough give to reduce flat head syndrome.

 

Comes with internal side supports so it can be converted to a toddler mattress (so child can sit on edge) 51.5 x 27.5 x 6". Shipping $35.