Help you ease back and shoulder pain. Both for man and women. Support straps around the front shoulders to pull them gently back for correct posture. Make you stand taller and straighter. Comfortable and light to wear underneath clothes, with no discomfort or visibility. L: 32 x 10 x 28 (Length x Shoulder Width x Waist) XL: 33.5 x 10 x 29 (Length x Shoulder Width x Waist) XXL: 36 x 10 x 29.5 (Length x Shoulder Width x Waist)How to use: 1. Pull shoulder straps over shoulders making sure that fabric pouches with magnets are closest to your body.2. Stretch waist belt around torso and fasten.3. Adjust position and snugness as needed. Shoulder straps should pull back slightly on shoulder area. If needed pull waist belt down slightly to increase shoulder pressure.4. Wash by hand in gentle detergent. Air dry.