Select Support Sheer Open Toe Firm Support Knee Highs Open toe eliminates toe pressure on large or swollen feet. Nylon / spandex blend with a wide comfort band creates a fit that hugs without binding. Graduated Support Level: Firm 20-30 mm / Hg 62% nylon, 38% spandex. Note: Light to moderate support products are recommended for first-time wearers. Made in USA. Care: Machine wash on gentle cycle or hand wash in warm water. Use a mild detergent. Lay flat to dry.