Best Mattress Toppers for Side Sleepers: Side sleepers have unique comfort needs, and these 3-inch gel memory foam mattress toppers are specifically designed to address them. Offering exceptional pressure relief and contour to your body's curves, these 3-inch gel memory foam mattress toppers provide optimal support and comfort for side sleepers. Say goodbye to shoulder and hip pain and enjoy a restful night's sleep on these specially tailored 3-inch gel memory foam mattress toppers.