Black memory foam set with adjustable strap

Updated at 2026-09-10

This black 2-in-1 support set is built for users who want a secure fit on their office chair. It includes a memory foam seat cushion and a lumbar pillow equipped with an adjustable strap. This strap is a key feature, as it prevents the back support from sliding down or shifting when you stand up and sit back down.

The black fabric is sleek and durable, making it a standard choice for professional settings. The memory foam interior provides a consistent level of padding that helps alleviate the hardness of wooden or plastic chairs. The seat cushion is contoured to help distribute body weight away from the tailbone and onto the thighs.

By using both pieces together, the user can create a more ergonomic environment that supports the natural curves of the body. The adjustable nature of the back strap ensures that the lumbar support hits exactly where it is needed most. It is a functional and easy-to-install upgrade for any home or office workspace.

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Brand: KELVONTRA
Details: Black Cushions for office chairs Memory foam seat cushions Cushions for driving Lumbar support cushions Gaming chair cushions
Also in: Black seat cushions Cushions for office chairs Memory foam seat cushions Cushions for driving Lumbar support cushions Gaming chair cushions Cushions with adjustable straps

This set

Black memory foam set with adjustable strap

Listing facts

Rest of the KELVONTRA set

Gray two-in-one memory foam support set