Longlife cell neoprene and extra buoyancy the swimrun uses our robust and proven longlife cell neopren it grants the required robustness and ensures a maximum buoyancy without compromises in flexibility the additional buoyancy in the chest and thighs provides an even better water position protected knee area abrasion resistant material at the knees provides a better grip when exiting the water and protects against damage from sharp objects front zipper and soft collar the long front zip is