The Sparco off road high base cushion is made with memory foam that provides additional comfort and finished with a waterproof material. Suitable for use with a range of Sparco racing seats. Ideal for off-road use or open-top vehicles Memory foam provides additional comfort and reduces fatigue Waterproof material cover Suitable for use with the following seats: Sparco QRT-R, Evo, Evo L, Evo XL , Circuit, Circuit II Not FIA compliant