I modified a large knee pad to be used as a lower back protector that covers the coccyx and the lower back. It is reinforced with some thick plastic sheeting.
Should anyone ever want to make one, I have directions and images in this gallery.
Concept came from Scott Bridgman’s MUniac.com website. I made it over a year ago and wear it everytime I ride. It really helps during UPD’s that cause a roll or just falling on that area of the back.
It took me about 3 hours to make, but a lot of that time was planning time.
tr2 large knee pad
thick durable thread
large plastic sheet - normally used as a flexible cutting board
11" of 2"wide velcro - available at a fabric store
My only recommendation for improvement would be to double up the sheeting.
Total cost was about $24. The pad was @$16 and the velcro cost @$1. I went to a dry cleaner that does tailoring and had them sew in some velcro into a pair of shorts that I use for MUni. That cost me $7. I had no access to a sewing machine.
I have three pairs of shorts with the velcro sewn into them. This is so one pair can be worn for each day of a MUni weekend.
At the time when I made this, I couldn’t find any type of protection like this on the market, so I made it myself. For all I know, there might be something available now.