The present disclosure relates to a wetsuit that provides support for the lumbosacral region of the wearer. The wetsuit has at least one layer of foam rubber or other wetsuit material with a lumbar portion disposed in the lumbosacral region of the wearer. In certain embodiments, the wetsuit has at least one tensioning mechanism that allows the wearer to selectively change a level of support provided by the lumbar portion to the lumbosacral region of the wearer.