Premium 3.0 Merino Heated Socks Women's Size:SM it’s finished with YKK zippered

it’s finished with YKK zippered hand pockets and a durable front closure

Optional 3-phase Cooling Ice Packs can be added to boost performance during extreme heat

Fast-charging and compact

The Proton Heated Baselayer Shirt features a midweight printed knit design with a soft lining

To learn more about which garments are compatible with what batteries

Premium 3.0 Merino Heated Socks Women's Size:SM it’s finished with YKK zipperedEveryday comfort with just the right amount of warmth. The Premium 3. 0 Heated Socks feature a soft merino wool blend, calf length design, and a single heat zone under the toes for subtle, targeted warmth. With a comfort toe seam, heavy cushioning in key areas, reinforced heel and toe, and no slip features, theyre perfect for staying warm on chilly days without the bulk. Ideal for daily wear, light outdoor use, or cold weather commuting.