The Unknown Koi rash guard from Progress upholds their high-quality standards while introducing new construction improvements. Featuring side panels made of mesh material for enhanced ventilation, the designs are bold and vibrant, with contrasting white side panels and branding that complement the overall color scheme beautifully. 85/15 Poly/Spandex blendItalian sublimated ink for enhanced graphicsBreathable mesh side panels for improved ventilationRapid dry technologyAnti bobble technologyTriple flat lock stitching which will never rub and last for years Men's Size Guide XS: 132 lbs and under S: 132-154 lbs M: 154-171 lbs L: 171-191 lbs XL: 191-209 lbs 2XL: 209-235 lbs Women's Size Guide XS: 99 to 121 lbs S: 121 to 143 lbs M: 143 to 165 lbs L: 165 to 187 lbs XL: 187 to 209 lbs |