I purchased these plates to fit into my GSI backpacker cook set. As tonycam mentioned they don't fit into the pot or in the wash basin at all. They can fit between the pan and the lid but the added inch of rise this creates makes it unable to fasten the velcro on the top of the set. Plates seem very sturdy and for the price they are a great buy. Just need to decide if I am going to alter the way my top closes or just stack these separately.

I bought these plates to go with the 2 person GOURMET BACKPACKING COOK SYSTEM
http://www.gsioutdoors.com/detail.aspx?a=8&p=44209&

It is the smaller version of the GSI Outdoor Gourmet Camping Cook System which is sold here.
http://www.backcountry.com/store/GSI0102/GSI-Outdoor-Gourmet-Camping-Cook-System.html

These plates *do* fit in my 2 person kit, but not at the bottom of the stack as pictured in the manual. I have to place them between the plastic lid and the frying pan at the top of the stack. This makes the frying pan sit about an inch higher than normal but the kit was not designed for plates.
...or just put them on top of the frying pan, which is what I just settled on as I was writing this. My point is, the plates do not fit in the wash basin or the pot.
I do love my GSI products!

I bought these after tonycam's review for use with the same cookset. When you put the plates where he suggested it does not create any problems as best as I can tell. The plates hold up well.

I failed to pay attention to the 7.5" diameter of these plates before ordering. I returned them because that's just too small for my mainly car camping needs. The sides of the plate aren't very steep, which makes me think food might slide off and liquid from messier meals might drip over the edge. In general, the Gourmet Plate Set plates are nice enough, and they're BPA-free. I ended up going with the larger GSI Outdoor Infinity Plate.

This is exactly why I was planning to buy these, but I couldn't be sure they would fit in the 2-person system. Thanks for the info!! The system is really well-designed, but it could use a couple of plates as a standard element.

These plates are a little small, but lightweight. They don't feel as solid as a Lexan plate.