Our Back on Track Billie Socks are designed for all‑day comfort, especially for people who want a soft, flexible sock with a gentle feel around the foot and lower leg. The Billie Socks are knitted in supportive zones with light stretch and a loose, non‑restrictive shaft to help reduce pressure and minimize chafing. Made with our innovative Welltex® technology, the fabric is designed to support comfortable temperature and moisture balance throughout the day. The socks offer good breathability and a smooth, pleasant feel, making them suitable for everyday wear or nighttime comfort. Features Welltex® technology Knitted comfort zones — soft structure for an easy fit Good breathability — helps feet stay comfortable Moisture‑ and temperature‑supportive — ideal for daily Size Guide Recommended sock size correlates with U.S. shoe size: Small: Women’s 6–8 / Men’s 5–7 Medium: Women’s 8–10 / Men’s 7–9 Large: Women’s 10–12 / Men’s 9–11 Material Specification Technical blend with Welltex® technology Care and Washing Instructions