Select Support Women's Sheer Moderate Support Thigh Highs 30% spandex Moderate compression provides relief from mild swelling and edema or minor cases of varicose veins. All the makings of totally comfortable thigh highs: silicone-backed lace band (which eliminates the need for garters), smooth, flat toe seam and knit-in waistband. Graduated Support Level: Moderate 15-20 mm / Hg. 70% nylon, 30% spandex. Note: Light to moderate support products are recommended for first-time wearers. Made in USA. Care: Machine wash warm on gentle cycle or hand wash in warm water. U