... tubing design,firm and durable Sit-up Bench(fitness,sports,fitness machine)Function:sit-up exerciseSpeciality:1.76*3mm thick ... sponge with high density and excellent leather;4.sit-up angle is adjustable with 9 stages;5.the ... 22years of hard development,WNQ has already set up more than hundreds chain stores of direct ... the professional gym Welcome to WNQ! Sit-up Bench(fitness,sports,fitness machine)