Used Vaughn ventus VKPLT80

The VKP LT80 knee and thigh guard is designed with a low profile knee area for a natural fit into the leg pads. Cushion padding on inner and outer areas of the knees. Large molded knee cap gives increased protection and coverage. Molded thigh section extends to protect the inner thigh area. Dual elastic straps with grip strips secure the pad to the leg for optimal fit. These have the slots so they can be suspending with slots from a garter belt, or can be tied into a pair of pants that have a matching tie in holes. This is SR sized, and they are quite large. There is no further sizing beyond SR, but I can tell you that if you that they are pretty big.