Single owner. Kept in excellent condition and washed after each use using specific wetsuit cleaner to preserve the material. Neoprene Type 100% Superstretch Thermoprene (75% stretchier than standard neoprene) Seam Construction Sealed Zipper Style Anti-Flush Back Zipper w/ Integrated Spine Pad Internal Features Lycra Trimmed Edges for Comfort Additional Features Adjustable Collar -