Whether your mattress is standard, adjustable, pillow top, custom, we make a sheet for it that WON'T POP OFF - GUARANTEED! If your mattress is a Flex Top, We also GUARANTEE that the "V" in the split top WON'T RIP!! Sheets for Flex Top, Split King, K, Q, F, Tw, College Dorm, Futon, RV, Daycare Mat Sheets, Daycare Cot Sheets...We make them all! Cotton/Poly, Poly/Cotton, 100% Cotton and Charmeuse Satin. Made in America! We are working to build a stronger America!