This pair of black Velcro elastic Knee Dot Straps are used to visually mark the tibial tuberosity (bump directly below the knee cap). They work great in conjunction with the Self-Leveling Laser to facilitate seeing the frontal view (Z-plane) while the cyclist pedals. Knee Dot Straps work great over tights, with sweaty and/or hairy-legged athletes (unlike stickers) without leaving a permanent mark (unlike a pen).
Adhesive Sticker Dots, which are also included, are placed over the second toe on the front outside of the shoe.
Also useful for retaining and positioning a plumb-bob to view the relationship of knee over pedal. Thread the plumb-bob string behind the strap and adjust the height so it is just above the cyclists shoe.