Socks: When they get all bunchy and sweaty, they're the bane of your existence. When they function flawlessly, you don't even notice they exist. The Smartwool PhDR Run Ultra Light Low Cut Socks is set to put all inferior socks to shame thanks to their superior moisture wicking qualities and extreme under the radar comfort. Smartwool's 4 Degree Elite Fit System means the PhDR Run Ultra Light Low Cut Socks offer greater stretch and recovery, while ReliaWoolTM makes them super durable for the long haul. With an overall height of 2.25 these socks are neither too short nor too high, meaning you'll instantly forget you're wearing them and focus on the workout instead.