With good posture, wrap a measuring tape under your arms around your back and take the measurement at fullest part of your chest. Be sure to keep the measuring tape parallel to the floor.
2. Measure your waist
Our waist can be a difficult area to measure! The natural waistline is halfway between the lowest rib you can feel and the top, outside edge of the hip bone. One trick might help you find this spot are to stand up straight and tilt over. Where your torso creases is where your waistline is.
Model: 5’11” (180cm), 179lb (81kg) is wearing a size M
Newest Graphene Heating Diaphragm System: Sailwind adapts the most advanced technology of cellular lock thermal, releases warm infrared light waves across the left and right sides of the abdomen, in addition to the collar and back, keeping your body’s core warm, as well as your hands. Warm preservation and anti-static.
The Detachable and Adjustable Hood: the high neckline can effectively resist strong wind, especially in cold weather.
Battery Pocket: located on the left side of the vest inner with a smooth zipper, can prevent the battery from falling.
Machine Washable: durable fabric and carbon fiber heating elements are completely safe for hand and machine washing
HEATING SYSTEM
4 Heating Zones: in the core area of the body (neck, back, and abdomen).
3-Mode Temperature Control: 3 adjustable temperature modes (low level, medium level, and high level).
Extremely Long Battery Life for One Charge: Quickly heated in seconds, can last for up to 9 hours of long-lasting warmth.
WHY SAILWIND POWER BANK
Mini Size & Lightweight: 3.54*2.48*0.87 inch, 7.28 oz(185g), barely feel a thing.
Large Capacity: 10000mAH / 37Wh POWER BANK
User-Friendly Design:4 Indicator lights with round corners
Versatile: Unlike other batteries for heating apparel, our USB port can be matched with smartphones or other mobile devices.