Bamboo Shredded Memory Foam Pillow - With Cooling Bamboo Pillow Cover (Standard) Supports Neck For Side, Stomach, & Back Sleepers Bamboo 40%. Polyester 60%, Premium Grade Proprietary Foam Blend Premium Grade Proprietary Foam Blend, Hypoallergenic & Dust Mite Resistant Extra Breathable Micro-Vented Cover, Premium Zipper Will not go flat