Description Beech tree fiber: sustainably sourced from beech trees Cool to the touch and helps wick away moisture, keeping you cooler at night Breathable and odor resistant Dimensions Choose the right size for your pillow (Allegro, Andante, Piano Air) Material 80% Beech tree fiber, 20% Cotton Care Instruction When using a washing machine, use a washing net, and by hand wash, wash gently. Wash with cold water and a mild detergent. Tumble dry on low.