From the Summerhill Blue Collection. The Summerhill Blue collection includes duvet covers, pillowcases, flat and fitted sheets featuring elegant borders and trims in Gingerlily’s signature ivory for a classic and refined look. Summerhill Blue was inspired by the picturesque views of the historic Ashdown forest. Gingerlily silk products catch the light beautifully to create an iridescent shimmer giving one's bedroom a true feeling of luxury. Naturally hypoallergenic, silk adjusts to an individual’s body temperature while they sleep to help keep them warm in winter and beautifully cool in summer.