187 Killer Pads 187 Killer Knee Gasket Pads – 187 Knee Gasket – Roller Derby Knee Pads Size Large – Fits 15 Inches – 17 Inches : 187 Killer Knee Gasket Pads – 187 Knee Gasket – Roller Derby Knee Pads – Curved ergonomic design – Thick padding surrounds the patella – Two layers of neoprene encase super-absorbent EVA foam – Ventilated mesh sewn in for breathability on back of knee – Non-irritating side seams for comfort – Top and bottom stitching for durability