Bestop 39437-15 TrailMax II Black Denim All-Vinyl Fixed Rear Bench Seat for 1955-1995 CJ5, CJ7 and Wrangler YJ Sturdy Atlas frame and Variable Rate of Resistance springs for great support High-density closed cell foam minimizes fatigue, maintains the seat shape Meet Federal Motor Vehicle Safety Standards. Ultimate Foam closed-cell seat material is treated for water-resistance and flame retardance Fixed seat back design for firm, optimized support Automotive-grade all-vinyl upholstery using industrial thread