Marcy Crunch Board with Vinyl Dumbbell Set Combination crunch board/dumbbell set for working chest, abs, and more Seat pad adjusts to flat and decline positions for dumbbell work or crunches 40-pound dumbbells include four 2.5-pound plates and four 7.5-pound plates Racetrack-style steel tube frame; large front and rear stabilizers 2-inch Turbo upholstery with contoured, oversized foam roller pads