Womens Size - we've found best fit to 5'8", 150 lbs. One Size - Best fit Up to 150 lbs. (Mftr. Package originally: Up to 175 lbs., We recommended best fit is up to 150 lbs. Mftr. has taken our recommendations, and while sized the same, some of the packaging will say Up to 175 lbs, while some is now saying Up to 150 lbs.) Best fit is Up to 150 lbs.