The Back on Track positioning mattress is good if the body feels generally sore and stiff. The positioning mattress also helps with back problems. Many feel that they sleep better and wake up less stiff in the morning. The mattress neutralizes temperature fluctuations and is just as comfortable in summer as in winter. Use a thin cotton sheet over the replacement mattress.
Placement mattresses are 100% polyester (including heat-reflecting minerals), the filling is 100% polyester and the bottom surface is 100% cotton.