These are used, but in excellent condition and have been washed ready for a new owner 
"TSG Knee Gaskets are ideal for individuals requiring corrosion-resistant and flexible knee gaskets to seal delicate areas within their machinery."
TSG Knee Gasket Brace AD – Lightweight Knee Protection for BMX, Skate, MTB
TSG Knee-Gasket Brace Black
TSG Knee Pads All Ground Guards MTB BMX Bike Skate Protection Black
187 Killer Pads Knee Gaskets Black ADULT
Rekd BMX / Skate Protection Pro Knee Gaskets Black
Smith Scabs Black Neoprene XXL Knee Gaskets Protectors Good Condition
