ION Zip Knee Pads High-strength knee protectors perfect for downhill riding. Side-zip design with built-in SAS-TEC allows for easy on and off without removing shoes. The model boasts the highest impact resistance in the lineup. Black XL size Used approximately 10 times. Washed in a washing machine using a laundry net. Please understand that this is a used item, even though it has been washed. I will try my best to ship as quickly as possible, but it may be delayed due to work commitments.