Button closure Cool iron DESIGN: Port Authority Boys Core Classic Pique Short Sleeve Collared Golf Polo is designed with a hint of stretch, with flat knit collar and cuffs. 2-button placket on XS-M. 3-button placket on L-XL, with dyed to match buttons. WARDROBE STAPLE: An indispensable polo for just about every uniforming need. Designed for everyday wear, this pique polo is made from a durable blend for lived-in comfort, traditional good looks and exceptional value. MATERIAL: Our iconic polo style made from stretch 60 cotton/40 poly piqu??. SIZING GUIDE: With arms down at sides, measure around the upper body, under arms and over the fullest part of the chest. XSmall=Size 4, Chest 25-26 Small=Size 6/6, Chest 26-28 Medium=10/12, Chest 28-30 Large=14/16, Chest 30-32 Xlarge= 18/20, Chest 32-35 CARE INSTRUCTIONS: Machine wash cold with like colors. Do not bleach. Tumble dry low. Cool iron if necessary.