These 100% baby alpaca wrist and hand warmers are the ultimate in fashion and softness. They are sleek and refined enought to wear indoors - perfect for those days when your office is just too cold. They have an opening so your fingers can still funciton and a separate opening for your thumb. You can type or manipulate any device you need to because your fingers are free. I keep a pair of these in my classroom for the cold mornings. I can use my i-pad and write on my white board with no problems and my hands and wrists are as warm as can be! One size fits all!