<ul><li>This is a 2-Ply Walking Belt for home or commercial use. If you have a fabric backing that is a different material than the top side of your walking belt, you have a 2-ply walking belt. Some sellers try to scare you into believing a 2-ply belt will harm your treadmill and that is incorrect. We have over 50yrs combined in the fitness repair industry and guarantee these belts to be safe for residential or commercial treadmills.</li><li>Pre-Lubricated</li><li>Extra Lube Included</li><li>Lifetime Warranty</li><li>Fasteners Included</li></ul><br><br>This is a replacement walking belt for the Proform 525 Si Treadmill Running Belt Model# PFTL32062

Treadmill Doctor Proform 525 Si Treadmill Running Belt Model# PFTL32062