Black Neoprene Protective Slip-On Elbow Pads - Your Purchase Includes Two Elbow Pads. 2Mm Neoprene On Back Side. Close-Cell Foam Cold-Molded Padding In Elbow Protection Area. The Elbow Pads Just Slip On And Attach To Your Elbows To Your Specific Needs. One Size Fits Most. California Proposition 65 WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects and other reproductive harm.