Thank you for viewing! This is a set of two high-performance lumbar supports (back cushions) that dramatically reduce fatigue from desk work and long-distance driving. (These were purchased as the same product, but there may be slight differences in the mesh and individual variations.) They fill the gap between the chair and your lower back, maintaining an ideal S-curve. They distribute the load on your lower back, making it less tiring to sit for long periods. They have strings, so you can easily fix them to your chair. 【Product Features】 Breathable mesh material: Made of breathable polyester mesh. Comfortable even in summer or during long hours of work. High-density urethane: Provides moderate resilience and firmly supports your lower back. Great value set of 2: Versatile for use at home on your work chair and in the driver's seat of your car, or for use by a couple. Versatile: Can be installed in gaming chairs, office chairs, floor chairs, car seats, and more, regardless of location. 【Size and Specifications】 (See images) Material: Outer fabric 100% polyester / Filling urethane Color: Black x Red (Popular color that matches gaming chairs) 【Product Condition】 Like new, used only a few times. I don't think there are any noticeable stains, scratches, or urethane degradation. They have been disinfected with alcohol and cleaned, so you can use them immediately upon arrival. ※ However, one string is frayed and has been sewn, but it may be loose. Please have it repaired if necessary. (Last photo) ※ No pets, no smokers 【About Shipping】 We may change to Yu-Yu Mercari shipping. Instant purchase OK! First come, first served.