In the world of thru-hiking, Ray Day is a noteworthy holiday. It marks the optimal - go time - to ascend into the High Sierra on a northbound PCT hike, and it's symbolic of how we feel every time we hit the trail. Our Ray Day socks are breathable and Lightweight to keep your feet airy and fresh long after your last shower and cushioned in the right spots for consecutive days of high-impact walking. Darn Tough - Women's Ray Day Micro Crew Lightweight with Cushion