The Element 5/4 Back Zip Men's Wetsuit meets the needs of watermen who don't need much to enjoy being in the ocean. Supple, stretchy and robust; the Element line includes many features of the more technical end of the range: Silk_Stuff inner lining on the upper body provides a comfortable fit and good stretch in the shoulder area. Hot_Stuff 2.0 - ION's most stretchable thermal liner - further enhances warmth, flexibility and comfort. On top, critical seams have been reinforced to make this an eternal staple on many journeys. Element back zip wetsuits are equipped with thin protective padding on the shins.