10% of your purchase from items in our Breast Cancer Awareness collection marked with a pink ribbon will go to the Breast Cancer Alliance, a national foundation that has awarded more than $37 million to breast cancer research, fellowships, and screenings for underserved communities. We've teamed up with DeFeet again to bring you an all-time classic cycling sock to celebrate our 40th anniversary and only available from Terry. The Aireator lives up to its reputation as the gold standard and has become one of the most popular cycling socks sold around the world. The first to incorporate open-mesh construction on the top of the foot, Aireators breathe and wick extremely well. We love the fact that they are available in a women-specific fit (in 3 sizes), are thin, lightweight and have a high degree of elasticity to help maintain an efficient, close fit in performance cycling shoes. Made in the USA.