The 141 Series Natural Quilted Wool Mattress Pads are made with a 300 thread count bone colored 100% Cotton Pima Sateen sheeting material on top and bottom.  The Pima Sateen fabric is an Egyptian Cotton, with a satin weave.  Internally we use  Joma brand wool fill, weighing 1oz. per square foot.  Wool creates a micro-climate that evenly regulates body temperature and humidity all night and assures that there are no hot or cool spots to disturb a restful sleep.  The Natural Comforter is constructed with wool quilted all the way through the piece to keep it even and lump free.  For more information on Wool, Click Here.  

The construction is as follows:

Top Fabric/Wool/Bottom Fabric

0.25" total pad thickness.