The fourth element Xerotherm wrist warmers are designed to be used with drygloves, and bridge the gap between a diver's undersuit and dry glove liner. The wrist warmers sit below the drysuit seal, and allos air to equalize with the dryglove, preventing squeeze. In the case of a glove failure, the fabric is not too thick, meaning that water will not flood through the seal. The double layer of xerotherm fabric on the inside of the wrist provides enhanced protection for an area where blood flows close to the skin surface. Hands will therefore stay warmer for longer.