Energize your legs! Using integrally-knit graduated compression, these compression socks apply therapeutic pressure that starts at the ankle and gradually eases above. It's this external pressure that energizes your legs and Reduces Swelling. These socks have a 30-40 mmHg compression level that is ideal for all-day, everyday wear, sitting or standing for long periods. High-quality premium nylon fibers and Spandex throughout the sock allow for sustained compression throughout the day. These socks are specially designed to energise legs, reduce swelling, alleviate achiness & heaviness and to aid in muscular recovery. The specially designed fabric nylon and The 400-needle count gives supreme comfort and flexibility which contours leg and heel for superior fit. These socks are comfortable and breathable with graduated compression from ankle to calf with a contoured leg and heel for a great fit.They are also the extra wide style to fit comfortably around the wider legs and calves. Tested & Trusted: Based out of Missoula, Montana, VIM & VIGR is dedicated to creating products that provide you with everyday relief. VIM & VIGR graduated compression legwear was developed in partnership with vascular surgeons and vein clinics. These compression socks are available in Blue/Grey, Blue/Moss, Slate Blue/Maroon and 3 sizes: Small/Medium, Medium/Large and Large/X-Large. They're made out of 91% Nylon, 9% Spandex (Latex-free) and are machine washable.