From Black Diamond:

Warm, stretchy mitts with the added benefit of full touchscreen functionality, the Black Diamond HeavyWeight ScreenTap mitts are ideal for skiing, trail running or hiking with your smartphone. We started with a warm and stretchy fleece shell, then covered the entire palm with U|R Powered material to allow for gloves-on touchscreen use. Goat leather palm patches offer a secure grip on poles, dog leashes and apre's beers.