With so many back supports to choose from it may be difficult to know where to start. Once you know which support will fit your needs you can begin evaluating other factors such as size, material, comfort and fit. The material is very important because some people are allergic to latex so a latex free support would be needed. Another option would be a support that has breathable material. The style is also important because some are more comfortable than others. Make sure to have something that is adjustable to allow you to loosen or tighten the straps if you have them.
Please note that if you are under a physicians care for back pain or a back injury it may be wise to consult them first before purchasing a back support.