TranquilRelax MPN-TR0001-0BL Memory Foam Seat Cushion, 3-Inch Lift, Large

At 17.71" x 16.14", this large memory foam seat cushion adds a 3-inch lift to an office chair or car seat. Its medium-firm feel offers a stable sitting surface, while the beveled front edge is designed to support a more upright sitting position. Need a practical way to change your seat height without changing chairs? The removable mesh cover and non-slip base make it suited to regular use at home, at work, or on the road.

Everyday use

Use the cushion on an office, computer, gaming, dining, or car seat to add height and cushioning where you sit. The raised position can help shorter drivers improve their view and reach, while the roomy rectangular surface is intended to accommodate most adults. For desk work, reading, or a long drive, the memory foam and beveled edge are designed to distribute sitting pressure across the seat area, including the tailbone, hips, and thighs.

A seat cushion is a focused alternative to shopping for a different chair: it changes the sitting surface and adds lift while keeping your existing seat in use. The portable format also makes it easy to move between a home office chair and a vehicle seat as your day requires. Place it on a firm chair for everyday sitting, or use it for reading and other seated activities.

Technical overview

• Size: Large
• Dimensions: 17.71" L x 16.14" W
• Height: 3 inches
• Fill: Memory foam
• Firmness: Medium firm
• Cover: Removable, washable 100% polyester mesh
• Base: Non-slip
• Care: Remove the zippered cover and machine wash cold on a gentle cycle. Do not bleach or tumble dry, air dry completely before use. The memory foam core is not washable.

Benefits

The 3-inch height boost is useful when a chair feels low or a driver wants a higher seating position. Medium-firm memory foam provides support without being designed as a plush, sink-in pad, and the beveled front edge is intended to promote a more upright pelvic position. The breathable, moisture-wicking mesh cover helps make the cushion practical for repeated use, and its zipper lets you remove the cover for care. A rubber anti-slip base is designed to help keep the pad in place on the seat.

Buyer feedback often highlights comfort, support, and use during extended sitting, with some customers noting relief around the back and tailbone. Opinions on firmness are mixed: some find it balanced, while others consider it too firm. Stability feedback also varies, alongside customers who say it stays in place. These differing impressions are useful to weigh against your preference for a medium-firm seat and the surface you plan to use it on.

Final verdict

This large cushion is a practical choice for adults who want a 3-inch lift and a medium-firm memory foam sitting surface for an office chair, car seat, or other everyday seat. Its removable mesh cover supports straightforward care, while the portable design makes it useful across home, work, and driving routines. Choose it when the main goal is to add height and cushioning to a seat you already use.