Reach one arm over your shoulder and the other up your back behind you, working your hands toward each other — with the towel or blocks your tier allows. Clasp (or bridge the gap) and hold.

Declare your tier before starting. The timer starts when the position is set and stops when the grip or contact breaks. Stand or kneel tall — no hunching to cheat the distance. Either arm on top. Longest hold at your tier wins; a higher tier always outranks a lower one.

Difficulty tier + hold time