PureCare Luxurious SuperSoft Celliant Healing/ Energy Sateen 4-piece Sheet Set Sage Green Queen Precision-Fit corners for a clean, crisp fit on the fitted sheet - Precision-Fit 1" elastic band to prevent your fitted sheet from slipping off your mattress - ideal for standard or adjustable bases up to 18 deep - Enveloping pillowcases to secure your pillow within each pillowcase - An additional 4" width to the flat sheet for complete coverage