Size:

Male:     Collar: inner diameter 13.5cm,  height 2.2cm, thickness 0.7cm
              Handcuffs: inner diameter 6.5*5.3cm,  height 2.2cm, thickness 0.7cm
              Anklecuffs : inner diameter 8.7*7.2cm, height 2.2cm, thickness 0.7cm

Female:Collar: inner diameter 11.8cm,  height 2.2cm, thickness 0.7cm
             Handcuffs: inner diameter 5.7*4.7cm,  height 2.2cm, thickness 0.7cm
             Anklecuffs: inner diameter 7.7*6.5cm, height 2.2cm, thickness 0.7cm