I've been using Specialized Sub Zero's and they've done a great job down into the 20's. The ones I have are the fingered versions (versus lobster claw) which allow for shifting of road shifters. They are like other gloves in that they have a wind and water proof outer shell along with a thin felt liner. They also have a poly fingered separate glove that the shell/liner slides over. When the temps warm up you can remove the shell and just use use the poly glove. These gloves solved my cold finger issues.