Features: Universally Motorcycle & Car Back Support This versatile lumbar cushion seamlessly fits both motorcycle seats and car seats, providing ergonomic comfort for riders and driver without any modifications required. Memory foam molds to your spine for targeted pressure relief during long journeys, while the breathable and antislip base prevent discomfort and shifting during rides or sudden stops. Ideal for motorcycle enthusiasts tackling winding roads and daily commuters enduring long drives, this cushion offer essential lower back support to combat riding fatigue and driving strain. Use it during extended motorcycle tours through varying terrains or during your daily car commute; its light weight design and adjustable straps ensures a perfect, securely fit every time. Built tough with resilient memory foam that won't sag and wear resistant, tear resistant fabric, this lumbar support withstands the rigors of outdoor biking and daily car use while maintaining its supportive shape. Specifications: Component: PU+Memory Cotton Size:Approx.28cm/11.02''x11cm/4.33'' (small) ,37cm/14.56''x18cm/7.08'' (large) Package Includes: 1Piece Motorcycle Rear Seat Backrest note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.