Merino Wool Blend Socks; Calf Length L/R Design; Comfort Toe Heavy Cushioning in Key Areas; Arch Support Heel and Toe Reinforcement No Slip Features Everyday 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, they’re perfect for staying warm on chilly days without the bulk. Ideal for daily wear, light outdoor use, or cold-weather commuting.