Where can I buy the props needed. Are they cinder block bricks? Where can I find the strap?

Hi Mark, Great questions. I just sent you a direct message with prop links. Let me know if you have any questions. You can the option of foam blocks, which are lighter and easier to move around, or cork blocks, which are a bit heavy but more stable. I prefer the cork in general when I practice. I hope this is helpful. Please keep me posted.  Best wishes, Alana