Pearl Izumi Accessories Size Chart Wear what the pros wear when you slip on a pair of these new P.R.O. Tall Socks. These socks offer graduated compression and a seamless toe for a snug fit. P.R.O. Transfer yarn provides superior moisture transfer during the heat of summer. Features: - PRO Transfer yarns provide superior moisture transfer - Graduated compression for improved performance and slip free fit - Flat toe seam construction provides superior comfort over toes - Tall cuff height