Sophie in a chastity belt position training

Sophie in a chastity belt position training. Sir thinks I should do more position training. Maybe he is right, I only know a few of the slave girl positions. But it is fun to learn more about them, and I can easily train for half an hour at home every day. I know a few kneeling ones, and a few positions lying down. Maybe I am forgetting some important ones? Let me know if you know any more slave girl positions for me to train! (keep in mind I can not fully stretch my arms over my head because the bra is so tight)

File: bndf_m_624.mp4
Size: 452 MiB
Duration: 4mn 11s
Format: MPEG-4
Video: AVC, 1920×1080 (16:9), 25.000 fps, ~14.9 Mbps avg, 0.288 bit/pixel
Audio: 44.1 KHz, AAC LC, 2 ch, ~192 Kbps