AZTEC DIAMOND BLACK CORE BASE LAYERFeatures Super soft, four way stretch, sweat wicking sports fabric Extended zip for more casual wear Laser cut air vents to sides, back and under arms Core AD branding to front, arm and back Sculpted 3D created pattern for perfect fit Shape retainment technologies 40+ UV protection Tried and tested through years of development Item Code: 278SS23CRBSLBKXX68 Materials 80% Nylon 20% Spandex Care 30 degree wash, do not use bleach, cool iron on reverse, do