I'm selling two GII Trainer braces, one for the left knee and one for the right knee. Size is small.
The Trainer is a great support for general ligament instability, management of MCL tears, unloading the medial side of the knee (which may be needed in the case of medial meniscus damage, osteoarthritis in the medial compartment, or patellofemoral syndrome) and helping keep the kneecap in the right place and tracking correctly.
I used them primarily for management of chronic patellofemoral syndrome in both knees. They were extremely helpful for allowing me to continue high level sports, including skiing, while the PFS was really bad. Thankfully the PFS is under control to a point where I haven't needed to unload the knees in a long time, so I no longer use these braces.
More information and photos: http://www.diamondathletic.com/product;cat,4;item,1024;Knee-Braces-GII-Trainer
The left brace was used quite heavily: it's in solid condition and fully functional but looks more worn. The right one I used much less frequently, so it's in good condition.
Looking for $100 for the left brace and $120 for the right brace, or best offer. Buyer pays shipping (whatever method you like).