Sparco's 4-pt Snap-in Tuning Harnesses allow the user to quickly and easily install the belts for spirited driving, and remove them for the rest of the week. Constructed from high-quality fabrics and fitted with durable fasteners, each harness restrains the body for added safety and protection. Easy to use snap-in fittings attach to the included eye-bolts which are installed directly to the vehicle. Just snap-in and go!