After reading reviews on these liners, I decided to take a risk and try them out - good price for the risk. When I tried them on, I was surprised at how large the "one size fits all" really was. I have medium to large hands (not thick) and the liners are very loose. It's not a problem though, for the most part. I am using them as a liner in my scuba diving dry suit and they work good for that purpose. I also just finished a campout in the snow (with Boy Scouts). I used these liners in my Gortex mitten gloves. Yeah, there was extra room in the liners, but the liners did exactly what I needed - extra warmth. I gave the gloves a 4 because of the sizing issue. As another commented, it would be great to have a smaller size offered.I would be very hesitant to wear these solo, except maybe for jogging to help reduce that cold bite.