Men’s 2mm Wetsuit Jacket, Full Front Zipper, Short Sleeve Men’s 2mm Wetsuit Jacket, Full Front Zipper, Short Sleeve with SuperStretch CR-Tech, and titanium enriched neoprene. The seven panel design full YKK zipper is perfect for chilly water, brisk breezes and easy on an off changes. ~4-way SuperStretch 2mm Neoprene ~Premium Quality Neoprene ~2mm Neoprene insulation: lightweight warm ~Titanium enriched for extra warmth and water resistance ~7 panel construction for increased mobility ~Flatlock seam stitching lays flat for comfort, reduces water entry rash ~Durable, Flexible Strong ~Smooth and comfortable Form Fit ~Full Zipper for easy changes ~Protective flap behind zipper ~Heavy Duty #10 YKK Zipper ~90% Neoprene, 10% Nylon ~Provides protection from cold, rash, sun wind ~Protective DWR coating wicks water away ~Provides core warmth on chilly days ~Wear alone, under wetsuit or with rash guard layer ~Multi-functional, great for all activities involving liquid ~Swimming, Surfing, Kayaking, Diving, Canoeing, Fishing, Canoeing, Wind Kite Surfing, Sailing ~Perfect for Water Aerobics Pool Rehab ~Great under water skiing vest for increased warmth ~Built for comfort, function performance Water Temperature Recommendation: 73 degrees and up Men’s 2mm Wetsuit Jacket, Full Front Zipper, Short Sleeve Size Chart Search: SIZE CHEST WAIST WEIGHT Small 31-34 28-30 115-140 Medium 35-38 30-32 140-165 Large 39-41 34-35 165-190 XL 42-44 35-37 190-210 2XL 45-47 37-39 210-235 3XL 48-49 39-40 235-255 Men’s 2mm Wetsuit Jacket, Full Front Zipper, Short Sleeve should be very snug for Liquid activities to restrict water from flushing the jacket. Metric conversion: 1 inch = 2.54cm, 1 pound = .45kg