Turtle Gloves are made of Polartec fleece. I bought the mid-weight version. I believe there are a few versions depending on temperature ranges. I used to shove HotHands Handwarmers inside my gloves…it’s not case with these! They are so toasty that sometimes I have to turn them to the fingerless option. I also love how it has the watch window opening. These gloves are definitely wore the money for what you’re getting & the company is very responsive on social media when tagging them.