6 Best Seat Riser Cushions in 2026

The HAVARGO is a 20 by 20 by 5 inch cushion built from two layers. The lower 2.5 inches is a firm, supportive foam, and the upper 2.5 inches is a soft layer with shredded memory foam in the top. Silicone particles on the bottom grip the seat, and the cover opens with a large zipper whose pull is protected from wear. The firm base is what holds the height. The soft top layer is what makes the cushion tolerable for a long sit. The maker describes it for recliners and armchairs, and it is also listed for couches, sofas and rocker chairs. Because the cushion is 20 inches square, it needs a seat wide enough to hold it without the corners hanging over. The cushion ships compressed and the page asks for 24 hours to expand to full height, so do not judge the height out of the box. Compared with the Zantle at 4 inches it adds an extra inch, and compared with the MABOZOO at 6 inches it adds less height but gives a larger footprint. If you want a balanced, general-purpose riser for a recliner or armchair, this is the safest pick.

The Hem Dgpsy is the same 20 by 20 by 5 inch size as the HAVARGO, with a different build. The top layer combines shredded memory foam and polyester fiberfill, and a supportive foam pad underneath is meant to resist flattening. The maker says it adds about 5 inches of height to low or sunken seats, and silicone grip dots cover the entire bottom. The standout is the removable waterproof cover, which protects the foam from spills, oil, dust and moisture. The page says to hand wash the cover in warm water and not to machine wash it, which is a real limit if you like to throw everything in the washer. The cushion can double as a thick floor cushion, though that is a secondary use. The fiberfill-and-shred top is softer than a solid foam block, so check that the base pad still holds your height after a few weeks. Compared with the HAVARGO it has the better spill protection, and compared with the TANYOO it limits you to hand washing. If you share a chair with spills, pets or a lot of use, the waterproof cover is the reason to choose it.

The TANYOO is a 20 by 20 by 5 inch cushion with an upper layer of soft shredded memory foam and a lower layer of solid high-density foam. Textured silicone dots on the bottom grip the seat. The maker describes it as a replacement for a sagging recliner cushion and a help for getting up. The cover zips off and can be washed by hand or in cold water in the machine, with no ironing or bleach. The packaging detail is useful: the foam arrives vacuum-bagged and flat, and the page suggests a low-heat steamer or hair dryer to speed fluffing. That tells you to expect an initial wait before it reaches its full height. The solid lower layer is the part that matters for height retention, because a loose-fill base would flatten faster. Compared with the Hem Dgpsy it has an easier cover to wash, and compared with the HAVARGO it offers the same size at a similar structure. If easy laundering is a priority for a chair that is used every day, this is the practical choice.

The Acxseo is the thickest cushion here at a stated 6 inches, tied with the MABOZOO. It is a two-layer high-density memory foam build with a breathable, water-resistant cover that removes for cleaning. A built-in side handle makes it easy to carry between chairs, and the non-slip bottom is meant to keep it from sliding. Six inches is a lot of height, which suits a very low chair but is too much for many seats. The page lists uses from office chairs and sofas to wheelchairs, which are broad claims we would check carefully for your own chair. The text we reviewed does not give the length and width, so confirm the dimensions before ordering. The side handle is a convenience the 20-inch HAVARGO and TANYOO lack. Compared with the 5 inch HAVARGO it adds an extra inch of lift, and compared with the Zantle at 4 inches it adds two. If your seat is genuinely low and you want the maximum lift in this group, the Acxseo is the one.

The MABOZOO measures 18 by 16 by 6 inches, so it is smaller in footprint than the 20-inch models but just as tall as the Acxseo. The upper layer is memory foam and the lower layer is sponge, wrapped in a breathable air-layer fabric cover. A built-in handle makes it portable, and the cover is separate with a zipper so it can be removed and machine washed. The smaller 18 by 16 inch footprint fits narrower seats such as dining chairs better than a 20 inch square cushion. The page lists chairs from office and dining to wheelchairs, trucks and cars, claims we would check against your exact seat. The sponge lower layer is the part to watch, since a softer base can compress and lose height sooner than a solid high-density block. The package arrives compressed and the page suggests beating and shaking it to expand. Compared with the Zantle at 18 by 16 inches and 4 inches thick, it adds two inches of height in the same footprint. If you need a tall, compact cushion for a dining chair or smaller seat, this is the match.

The Zantle is the shortest cushion in this lineup at 4 inches, sized 18 by 16 inches. A firm, high-elastic base foam holds the elevation while a softer top layer spreads pressure. The maker describes it as an adult booster seat cushion for easier rising, with an anti-slip base that keeps it in place on chairs, sofas and wheelchairs. The moderate height is the point. For a chair that is only slightly too low, a 4 inch cushion gives a gentler change than 5 or 6 inches and is less likely to leave your feet dangling. The page also lists car seats and wheelchairs, uses we would check against your own seat. The text we reviewed does not describe the cover care, so confirm that on the page. Compared with the HAVARGO 20 by 20 by 5 inch cushion it is a smaller, lower option, and compared with the MABOZOO at 6 inches it gives a third less lift. If you are unsure how much height you need, starting with the 4 inch Zantle is the cautious route.