1. Just like your stock one that came with your bear mountain bridge only with a Zipper added over 3/4's the way around.
This is the stock one modified.
$45.00 Shipped to CUS.
2. I have another that is all DIY made just like the JRB, with Zipper, but make slightly WIDER (about 5 inches) than the original in case you want to use longer spreader bars with it. As you know, you must gather the velcro attachments all around the BMB to make it work, so you just gather it a bit more on this one. No pictures of this one but basically made the same.