Caribbean Coolers Cotton Square Pillow Color: Sky Blue Square Pillow. 18 x 18 inches. 100% Cotton. 250 Thread Count. 9 fun tropical colors to Mix and Match. Each color sold separately. Part of "Tropical Coolers" Bedding Collection - Mix & Match Bedding. Comforters, Shams, Bedskirts, Pillows, Sheet Sets, Drapes, and Valances are sold separately.