Men’s 2/1mm Wetsuit Jacket, Full Front Zipper, Long Sleeve with SuperStretch CR-Tech, and titanium enriched neoprene. The 11 panel design full YKK zipper is perfect for chilly water, brisk breezes and easy on an off changes. ~4-Way SuperStretch neoprene ~Titanium enriched alloy cells for extra warmth ~2mm Neoprene Back Chest: Warmth for the core ~1mm Neoprene Arms, Shoulders Sides: More flexibility ~Highest quality neoprene ~11 Panel design for maximum mobility ~Super Comfy Jersey stretch Nylon inner lining ~Flatlock seam stitching lays flat for comfort, reduces water entry rash ~YKK Full Front Zipper for easy changes ~Protective flap behind zipper ~Perfect Jacket for shoulder problems ~Heavy duty full #8 YKK Zipper ~90% neoprene, 10% nylon ~Built for comfort, function performance ~Protective DWR coating wicks water away ~Extremely versatile water sports Jacket ~Warmth for the core and more mobility for the arms ~Wear alone, with rash guard or under wetsuit ~Provides protection from rash, sun-UPF 50+ and wind ~Multi-functional, great for all watersport activities involving liquid ~Water Aerobics, Swimming, Kayaking, Diving, SUP, Surfing, Wind Kite Surfing, Fishing, Sailing, Water Skiing, Canoeing Pool Rehab Water Temperature Recommendation: 72 degrees and up Men’s 2-1mm Wetsuit Jacket, Full Front Zipper, Long 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 2-1mm Wetsuit Jacket, Full Front Zipper, Long Sleeve should be very snug for Liquid activities to restrict water from flushing the jacket. Men’s 2-1mm Wetsuit Jacket, Full Front Zipper, Long Sleeve, warmth comfort and function and the best value on the web or stores for a quality wetsuit jacket. Metric conversion: 1 inch = 2.54cm, 1 pound = .45kg