Custom Monterey Bay Half Marathon Left Chest Print design. The most comfortable shirt you'll own - this 'moss jersey' sueded baselayer is softer than cotton, with the right amount of stretch. Double-sided jersey fabric, chin guard, cover-stitch detail. Made with sustainably sourced 90% Recycled poly, 10% Spandex (solids), 45% Recycled poly, 45% Poly, 10% Spandex (heathers). Item ID mbmp422781m