Recommend order ONE or TWO size up. Please refer to our size chart for size selection. Features: Waterproof, Anti-dirty, Warm, Breathable, Wear-resistant, Ultra-light, Anti-static, Acid-proof. Material: Made of high quality polyester materials, durable enough for your daily wearing. Light, soft and comfortable. This electric heating vest can activate various functions between the skin and promote metabolism. Please note: hand wash cold or gentle machine wash / do not bleach / dry. If you have any questions of us pruduct, please feel free to contact us. Your satisfaction is our greatest pursuit. Recommend order ONE or TWO size up. Please refer to our size chart for size selection. Features: Waterproof, Anti-dirty, Warm, Breathable, Wear-resistant, Ultra-light, Anti-static, Acid-proof. Material: Made of high quality polyester materials, durable enough for your daily wearing. Light, soft and comfortable. This electric heating vest can activate various functions between the skin and promote metabolism. Please note: hand wash cold or gentle machine wash / do not bleach / dry. If you have any questions of us pruduct, please feel free to contact us. Your satisfaction is our greatest pursuit. Size Chart: Size :L-- Size :Large-- US :8-- UK :12-- EU :38-- Bust :105cm/41.34''-- Shoulder :41.5cm/16.34''-- Length :67cm/26.38'' Size :XL-- Size :X-Large-- US :10-- UK :14-- EU :40-- Bust :107cm/42.13''-- Shoulder :42.7cm/16.81''-- Length :69cm/27.17'' Size :XXL-- Size :XX-Large-- US :12-- UK :16-- EU :42-- Bust :109cm/42.91''-- Shoulder :43.9cm/17.28''-- Length :71cm/27.95'' Size :XXXL-- Size :3X-Large-- US :14-- UK :18-- EU :44-- Bust :110cm/43.31''-- Shoulder :45.1cm/17.76''-- Length :73cm/28.74'' Size :XXXXL-- Size :4X-Large-- US :16-- UK :20-- EU :46-- Bust :112cm/44.09''-- Shoulder :46.3cm/18.23''-- Length :75cm/29.53''