New for 2015 the new roller derby 20 pads have been designed specifically for the sportplayers have been longing for a lower profile non bulky yet durable pad which offers maximum protectionthe roller derby 20 knee pads are equipped with a super strong fixed cap large and wide to safely cover your patella pre shaped high density foamabsorbs force on impact designed in a longer length to protect your upper shin a neoprene butterfly closure on the back is both practical and comfortablet