Before choosing a back brace you will need to determine what the purpose of the back brace and what it can do for you. When getting a medical brace for your back the doctor prescribing the brace will have all this information ready when you are being fitted for a brace for your back. If you have persistent back pain you should have a brace that will help to correct your poor posture. If you are participating in activities that will require heavy lifting you will want one that gives you support. Some need a back brace that will help to support your back while you are recovering from an injury.
For bending and heavy lifting consider a lower back brace that has suspenders so when it is not in use it can hang from your shoulders. This will keep it from moving normally when you are not lifting heavy objects. The brace should wrap tightly around your stomach and lower back just above your hip bones. You want to make sure that it has good quality product as an attachment system so this will allow you to remove it quickly or be able to secure it with little effort. The back of this brace should immobilize your lower back when you are lifting heavy objects, forcing you to lift with your legs and not your back.
The posture back brace will often support your entire back and not just your lower back. You want one that is not too bulky so it will fit underneath your clothing naturally without bulging. Carefully consider what materials were used to construct the brace. While latex is very supportive it does not breathe well. This means that sweat and moisture will become trapped between the latex and your skin creating some discomfort. Choose a product one instead because it is a stretchy material that is durable and breathable. Make sure that it fits you properly and can be sufficiently adjustable.
The back brace that is used after an injury is much stiffer and bulkier than the other braces that are used for support. This particular type of brace are used in only the most severe cases as these are usually quite uncomfortable. In any case where you will need a back brace the physician will recommend what brace to use. None of these braces will solve the problem on its own. You will have to use it in combination with other practices that are meant to help strengthen your back in order to prevent an injury again. Some of these other practices include exercises, physical therapy, rest, and more.