187 Killer Pads Pro Derby Black / Purple X-Small Knee Pads One (1) pair of 187 Killer Pads Pro Derby Black / Purple Knee Pads Size: X-Small Color: Black / Purple V-22 Dual Density Foam provides the perfect combination of cushion and protection from multiple hard impacts Rapid F L E X Hinge gives the pads a full range of motion so players can straighten and bend their leg with little to no resistance