Package information: 1 x Knee Pad (Sold in 1 Pcs， not in 1 Pair)<br><br>Type：<br>Uprade type: With silicone pad + 2 Springs<br>Standard type: Without silicone pad + 2 Springs<br><br>Features: (Uprade type)<br>Anti-slip silicone pad， hold the patella in pr