In the photos below I had 47 in Under Armour practice pants and socks. I secured his wrists into simple metal cuffs, put him against the cage, and locked his wrists to a spreader bar that was run through the cage. Another spreader bar kept his legs apart so I had easy access to his cock. For his head I chose the heavy collar and gas mask.
This position is actually somewhat comfortable at first since the sub is able to lean against the cage but after a short time it gets to be uncomfortable. The angle of the sub’s arms in this situation put strain on his upper back although there are a few things that I could do to change a sub’s comfort level…In the picture on the bottom you can see he was enjoying the scene.