Turtle Gloves is a small business a stumbled upon. I was looking for some gloves that would keep me warm without having to wear two pair of gloves & have to shove HotHands HandWarmers inside. These gloves do the trick! They are made of Polartec fleece. They keep my hand quite toasty. I purchased the mid-weight gloves. I believe there are different weights depending on the environment/temperature. When your hands get too warm, just fold the mitts back & they become fingerless.