Say goodbye to road cramps! This seat cushion is designed with contours that align with the curvatures of the body for maximum, customized strain relief in the upper legs. The cushion's high-grade memory foam reacts equally to the user and shocks from the road, the latter of which it absorbs. Since the foam molds to the user's exact leg shape, the cushion's support lasts long and works consistently, making it ideal for use on longer trips. It holds this customized form no matter how long it's used for, so this isn't a cushion that requires frequent repositioning and adjustment. The non-slip rubber backing that covers the bottom of the cushion keeps it from moving around in place, even on the roughest of roads. As you get in and out of the driver's seat or the passenger's seat, the cushion will stay right where you placed it, without any cumbersome straps or buckles to keep it down. It also withstands even the harshest of road shocks, so once you've placed the cushion down where you want it, that's where it'll stay. Keeping the cushion clean and pretty is no issue too, thanks to its ultra-soft, plush removable cover. This extra comfort layer is easy to remove from the cushion thanks to its zip-on design, so all it takes to maintain a fresh, new look for your cushion is unzipping the outer layer on laundry day and throwing it in the wash. After running the cover through the dryer, put it right back on the cushion for a product that will look as comfortable and fresh as you'll feel using it! ● Contoured for upper leg support in cars and SUVs ● High-grade memory foam for long-lasting, customized support● Universal fit (dimensions: 16. 25” x 16. 5” x 3. 75”)● Ideal for use on rough terrain● Non-slip rubber backing secures cushion to any car seat● Removable plush cover for cleaning ease