I've owned 2 pairs of these mitts and by far they're my favorite of any glove or mitt that i've owned. My first pair lasted me 10 seasons and I wore the crap out of them. Just purchased a new pair and look forward to having warm hands for another 10 years hopefully. The mitts are great as the mitt itself has a mitt liner and they also come with a glove liner that fits inside the mitt liner. You have plenty of room to put a heater pack if you need it on the below zero days. Having the glove liner be able to slip into the mitt liner is great when you're buckling in or tying your boots on a cold day.