Drop-in bedliners from STK, the leader in truck bed innovation, feature extruded skid resistant technology that won't wear off. Molded of high density polyethylene to last as long as your truck, their high-ribbed floor pattern is designed to promote drainage and create additional cushioning against denting--a feature that you don't get with spray-on bedliners. Recent studies also indicate that spray-on applications may put installers at risk of developing serious illnesses associated with diisocyanate exposure (click here to learn more about this risk). Outlined below are some other things to consider when comparing an STK drop-in bedliner to a spray-on bedliner.