If you are like most people one pillow throughout the night is just not enough. There s the pillow behind your back for support the one between your knees for temperature control and the two to prop up your head. And if you re pregnant don t forget to add one more for tummy support. The Sleeper Keeper was uniquely designed to follow your body s natural contour and shape from head to toe. Perfect for sleeping and relaxing. The horseshoe-shaped head pillow allows you to attain the position and height that is right for you. The extra-long midsection is the ideal width for back or tummy support? Depending on the direction you choose for your Sleeper Keeper. The slightly curved end tucks snugly between the knees.