Lightweight But Warm, High-quality Materials: This Heated Body Warmer for men women is made of soft and skin-friendly cotton material, the interior uses a lightweight high-quality down filling to keep warm and comfortable. Lightweight, waterproof, windproof, and can provide perfect long-lasting warmth. The Heated Vest weighs only 400 grams after being folded, which can replace all warm clothes in winter. Safety Assurance,Built-in Thermal Protection Module: Our heating clothes have overheat protection and short circuit protection when the temperature is too high, it will automatically lower the temperature to protect your safety, so it is 100% safe to use. Work with a common power bank with a common USB port. (Power bank is not included) Multifunction&Occasions: This Down black heating waistcoat can be used not only as a stylish winter dress, but also as a warm coat in the cold, or as health clothing to promote blood circulation. Great for winter outdoor activities, hunting, skiing, fishing, motorcycle , bicycle, camping, Mountain climbing, outdoor attendance, office daily, etc.A perfect present for your elders, lover, friends and yourself. The best Thanksgiving and Christmas Gift.