Opened for inspection, but the item is actually unused. I am selling the 2025 latest model heated socks (black, standard size). Made of 90% cotton and 10% nylon, they are highly breathable. This is an improved version that warms the toes, soles, and insteps 360° for a soft, kotatsu-like warmth that lasts. **■ Key Features:** ① **Easy smartphone operation:** Adjust the temperature (40℃～70℃ in 4 levels) and set timers with the dedicated app. Easy to operate even in bed! ② **Easy to wash design:** Both machine washable and dryer safe (※Always remove the rechargeable batteries before use). The thick toe area prevents fatigue even after long walks. ③ **Two PSE-certified rechargeable batteries included:** Two batteries with a real capacity of 8500mAh each, providing up to 10 hours of use. Type-C charging compatible with smartphone cables. ④ **Unisex fit:** Suitable for foot lengths of 23-27cm. The battery storage pocket has an anti-slip design to prevent shifting while walking. **■ Main Uses:** Ideal for commuting, outdoor activities (skiing/fishing), as well as for cold sensitivity relief and as a gift for the elderly. App connectivity allows for timed heating while sleeping. **【Important Notes】** ・This is not a medical device. Discontinue use if any skin irritation occurs. ・In case of initial defects (failure to heat or charge), please contact us via transaction message within 7 days of receiving the product. We will accept returns (buyer is responsible for return shipping costs). ・When washing, always remove the rechargeable batteries and use the included laundry bag. For inventory clearance, a brand new, unused item is available at a special price. This item will warm your feet and your heart this winter. Please feel free to ask any questions before purchasing. We strive for courteous transactions.