The Stay Active Back Belt is both easy to use & comfortable, providing lumbar support for those who do regular manual work, gardening & even for activities such as playing golf. The belt is easily adjustable & can be tightened to provide stronger support & loosened when you need a lighter support. It comes in 2 sizes, small to medium (32” to 38”) & large (38” to 44”). It is discreet to wear & lightweight with a unique airflow mesh material, meaning it can be worn underneath clothes unobtrusively & is easily washed by hand in warm water. How Does The Tenscare Stay Active Back Belt Work? The Stay Active Back Belt works by using a special Mechanical Advantage Pulley System to ensure even compression & stabilisation of the Sacroiliac Joints (SI) to relieve pain & discomfort & offers continuous support. It is recommended for the treatment of chronic back pain, Arthritis & Sacroiliac strain. How To Use Make sure the belt is completely open & cords fully extended before using. Hold the belt around the waist with the middle pulley blocks on the centre of the spine, wrap the belt around the waist & fasten the fabric right over on your left hand side. Ensure the belt is in the correct position, with the pulley block centred on the spine & the belt around your waist & lower back. Pull the handle away from the fabric fastener, across the front of the body. Pull as tight or as loose as required & simply fasten the belt onto the belt fabric. The Stay Active Back Belt is not intended for long periods of use unless told otherwise by your doctor. Read all instructions thoroughly before use.