Winter Elastic Heating Socks w/o Power Bank Rechargeable Breathable Outdoor Anti-Cold Foot Heated Thermal Stockings Feature: Made from high quality modal material, they are hard wearing and durable, not easily warped and pilled, and breathable. The socks are twice as elastic as normal fabrics and cover the feet and ankles neatly. They are waterproof and washable and can be used many times. The good stretch design makes them suitable for different foot shapes. Constructed with a double layer of modal and cashmere fabric, the invisible heating method provides comfortable heating. Large, odourless and soft, reliable for everyday use and perfect for cold winter days. Specification: Material: 70 Cotton (≥70% Cotton Content) Colour: Black/Grey Weight: 165g Size: Sock Tube: 28cm; Sock Sole: 22cm Suitable for: 3.7V power bank, not for other models. Power Supply: 3.7V 2A Output: 4500mA Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. Included: 2 X Heated Socks