Large/X-Large. Men's: 8.5 - 13. Women's: 10 and up. Lifts and supports plantar fascia. Targeted compression. Ideal for day or night use. The airplus Plantar Fascia Sleeve offers superior targeted compression to support the critical arch and heel area. The Plantar Fascia: The tissue that connects the ball-of-foot to the heel can become inflamed due to stress and improper gait, potentially causing pain in the arch or even heel spurs. The Plantar Fascia Sleeve is easy to put on and can be worn both day and night. Its lightweight construction can be worn under socks for extra support during everyday activities or for added comfort while sleeping at night. We stand for comfort. The Airplus Promise: We guarantee that you will be happy with this airplus product! If unsatisfied for any reason, please return for a complete refund or replacement. 100% money-back guarantee. airplusfootcare.com. Please recycle. Made in China.