Hi @mbankert - Thanks so much for bringing this question to the community! As @Philreedshikes and @hikermor said, the design of the men's bag does not mean it won't work for you. There is one big difference in most men's and women's sleeping bags that you'll want to pay attention to though.
Often, the number in the men's version is associated with the lower temperature limit, where the number in the women's version is associated with the comfort level. With the Co-op Trailbreak 20, you'll see the difference in temperature ratings is quite a lot:
- Men's Trailbreak 20: Lower Limit 18°F, Comfort Level 29°F
- Women's Trailbreak 20: Lower Limit 5°F, Comfort Level 18°F
As you can see, the women's Trailbreak 20 is a much warmer bag! Women's bags also often have a higher concentration of insulation in some areas for maintaining warmth, but it is those temperature ratings that you will definitely want to pay attention to. If you know what weather you are expecting to camp in and look at both the comfort and limit numbers on each bag, you should be able to pick which one will keep you comfortable on chilly nights. Let us know if you have any more questions. Hopefully this helps!