Port Authority Youth Core Classic Pique Polo. Y100An 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., 4.4-ounce, 60/40 cotton/poly pique, Flat knit collar and cuffs, 2-button placket on XS-M, 3-button placket on L-XL, Dyed-to-match buttons, Side vents