The NEW Double Core Select has two different sized lobes and four interchangeable, precision-cut foam cores. Each core is color-coded to differentiate the support level, from mild to extrafirm. Select the level of support that′s right for you. 22″x16″. • Two different sized lobes with four interchangeable cores. • Precision-cut foam to provide cervical support from mild to extra-firm. • Select the level of support that′s right for you.