Sit-up Bench(fitness,sports,fitness machine) Function:sit-up exercise Spec.1.76*3mm thick tubing design,firm and durable Sit-up Bench(fitness,sports,fitness machine)Function:sit-up exerciseSpeciality:1 ... of sponge with high density and excellent leather;4.sit-up angle is adjustable with 9 stages;5.the rear ... choice for the professional gym Welcome to WNQ! Sit-up Bench(fitness,sports,fitness machine)