Questions? Leave a comment below! The Isto Hand Warmer is ready for those cool days when you want a little extra warmth for your hand but still need your fingers free for high-dexterity tasks. It's there for those chilly mornings when you're curled up reading a book or those après-ski evenings with hot chocolate and a cozy lodge fire. With a heavy cable knit construction and all the benefits of Merino wool, this hand warmer brings comfort just where you need it.