These MuddyA(R) Nucleus Heated Socks will have you saying, "Where have these been all my life?!" Once you slip on the soft merino wool blend and push the silent power button, a discrete heating element powers on to keep your feet warm through the harshest cold and the longest wait in the deer stand. Rechargeable heated socks Three heat settings Up to 8 hours runtime (on Low, 3.5 hours on High) Merino wool blend Each sock features a single heating element that runs across the toe Powered by a 3,500mAh battery (included) Silent, easy-access power button at the top of both socks Batteries recharge in as little as 3 hours Order today!