Polyurethane offers higher abrasion resistance, and as such, is the perfect application for polyurethane doffers for cotton harvesting and processing. Simply put, Poly-Tek makes superior polyurethane doffers. One of many cotton picker parts we make. We have been making them for over 30 years! We keep our tolerances tight and ship dates on time! Our polyurethane doffer pads will last longer and perform better than our competition. Please send us an email at [email protected], and we will provide you with free samples. We will ship them as soon as you ask!