Gundlach, Crain, Allegro and Rubi manufacture flooring knee pads. AWP, Impacto, Dewalt and Kobalt are also reputable brands of knee pads suitable for flooring installation and other construction tasks.
Gundlach manufactures a large variety of plastic, foam and leather knee pads that combine comfort, protection and convenience. For example, the No. 209 Leatherhead XL Knee Pads attach with Velcro straps, and the leather exteriors do not scratch or scuff any type of flooring. The wide attachment strap makes these knee pads suitable for use with shorts.
Like Gundlach, Crain produces a wide array of knee pads for flooring professionals, including the popular "Comfort Knees" line. This product line includes flexible foam pads for carpet installation and hard polyurethane pads for installing hard floors.