Primus Windscreen and Heat Reflector Set for Camping Stoves - Lightweight, Durable Wind Protection for Outdoor Cooking, Hiking & Backpacking

This is a two piece windscreen. The first piece is a flat disc for under the stove. The second piece wraps around the stove with a little gap so the fuel cable can snake out the side. Pretty straightforward. Now here's the issue. It's junk. First, the flat disc piece doesn't look anything like the picture. Mine was a flat piece with no cutout for the stove. It broke after about 4 uses. The round portion also tore. What happens is that if you fold it in the same spot twice, it will weaken so significantly that the sheet will tear. It's just not worth paying any more than about $2-3 for. You'll be better off just to get a piece of tin or flashing from a hardware store. Not only will it be more durable, it'll be quite a bit cheaper.