The Lenz 6.1 Heat sock pretty much has it all—merino wool, a compression fit, and battery-powered heat for toasty toes under our ski boots. It's compatible with all types of Lenz lithium packs (not included), which can be attached to the socks with press studs on the waistband.
Heat sock with compression and merino wool
Synthetic-merino wool blend wicks moisture for drier feel
Compression fit fights fatigue for added performance
Thin design ideal for race boots and close-fitting footwear
Improved fit at cuff for added comfort
Package includes one pair of socks and 1 laundry bag