Fourth Element Arctic Leggings Combining the outstanding performance of the Xerotherm with additional thermal layering, the Xerotherm Arctic is the next stage in the development of a high performance system for divers in the most extreme environmental conditions. Using a combination of fast wicking & high insulation fabrics, the Xerotherm Arctic creates a micro climate around the wearer, keeping the body dry & warm. A high density inner fleece provides superior insulation, with maximum comfort & wicking, whilst the outer layer, which has a water repellant finish, ensures a snug fit. Suitable for year round use underneath neoprene drysuits or summer use under membrane suits, the Xerotherm Acrtic, builds on the performance of the Xerotherm base layer to be the perfect lightweight undersuit for dry suit diving.