Under Armour Heatgear Fitted Short Sleeve/Heather Blue/Gray/Small??

Under Armour Heatgear Men's fitted short sleeve t-shirt Size is labeled as Small but it seems bigger than that to me. Maybe medium? Check Measurements below to ensure you get the right fit. Chest 36" Length 29" Sleeve 9" Quality Under Armour line of apparel Crew neck design, solid pattern, and logo accent Heather Blue/Gray Made from 100% Lightweight polyester knit fabric Breathable with moisture-wicking technology, quick-dry capabilities for comfort Machine washable for easy care.