Ankle weights.

Went you went shopping for Sophia's Birthday stuff you stopped at a sporting goods store. You bought 200 pounds of ankle weights. The kind of weights that would let you chose the amount of weight to put in each one. You came back into the living room once you had retrieved the weights from the bedroom closet. Sophia is barely able to turn around in time to see you opening the box. Sophia is now crying when she asks you "What are those for?". You calmly respond as you begin strapping the empty weight pouches to her ankles. "To keep you from trying to run away from your punishment!". As you strap the second empty weight pouch on Sophia's left leg. You look up at the two women holding Sophia down and nod at them. A couple of seconds later the women grab Sophia's sundress and rip it off of her exposing her completely nude body to the three of you. Once her dress was removed you spread Sophia's legs as far apart as you can get to give maximum control of her pussy and ass for her punishment, and start putting weights into the little pouches on her ankles. You had find the right amount of weight to add. Too much weight it might break her ankles. You knew you were about to make her feel pain. You didn't want give her any long lasting injuries. Even though these women treated you like shit you still cared about them. You figured 25 pounds on each ankle would be enough to keep Sophia from running away.