Lowes offers DEWALT Flooring Knee Pads for $27.98 (reg. $39.98) 

Product Description:
Protect your knees during strenuous, repetitive tasks with DEWALT® Flooring Knee Pads with Gel. These knee pads are designed to provide a secure fit and provide continuous comfort on long days and tough jobs.

• Work in comfort: Work comfortably on long days with high-density foam, a protective gel zone, and swiveling buckles
• Dual straps: Wear comfortably and get a precise fit with an extra wide single strap and a quick-release elastic strap
• Constructed with durable materials: Take on tough jobsites with durable 1680 denier fabric for strength and abrasion resistance