All Tied Up Open Panty Plus Sizes 1X/2X from Rene Rofe Lingerie. Bring flirty appeal to your bedroom collection with this open back panty featuring elegant and romantic lace. Color: Black Fabric content 90% Nylon, 10% Spandex. Hand wash, hang dry. 1X/2X size 16 and18. Waist 36 inches to 40 inches. Hips 45 inches to 48 inches.