Elastic Strap

Where can I get a good elastic strap to use with penimaster pro? I'm thinking of buying this due to not being able to extend at work with the SG. I simply can't keep it on long enough anymore at work because of the burning sensation at the base on my sac. Tried pulling my balls through but I have big balls and its very uncomfortable to keep doing that everyday. Can't wear it at home anymore due to not having any privacy with a gf. I was wearing the SG for at least 4-5 hours a day, and using the Bathmate. I gained an inch in a year which was awesome. Now at a slightly longer length, the SG shows a lot more in my pants too which looks weird at work.

My thoughts are to use the penimaster pro with elastic trap tied to my knee. Sounds like some people have done that. This will still be effective right?

Oh and it was really the downward angle that I can't wear with the SG during the day at work, which causes the sac burn. Tried some padding but its annoying. While at home I was able to wear straight out or up which didn't burn/irritate the sac.

One cheap experiment you can try, is to take a roll of Ace Elastic bandage or equivalent, tie/fasten one end to the Glans chamber, tie/wrap the other end (wherever) and see what it feels like. Not the most high tech, but might let you see if you like it.