Ivory Sheets by Helena Springfield The Helena Springfield plain dye collection is available in a palette of 8 colours. Four classic neutrals; white, ivory, cream and linen are complemented by a soft gold, aqua, pink and blue. Available in four sizes of fitted sheets, flat sheets, base valances, standard and oxford pillowcases and made from soft smooth 180 thread count poly cotton percale, which is durable and easy to care for.