My boyfriend and I purchased a women's long and a men's regular Marmot Trestles sleeping bad and took them camping in the White Mountains for a midweek around Labor Day. We chose them because they zip together according to the description and the online chat I had with one of the Live help people. As we were warned, they did not line up perfectly (off by an inch or so) but that was no problem at all. They never unzipped, and we didn't even feel the zipper underneath us. They kept us warm and dry and were very comfortable. Both bags came with a compressible travel bag. A great bag for a great price!