Firm bolster filled with silicon hollowfibre that allows better circulation of air and reduces build up of moisture fantastic value for money 100 polyesterfirm bolster filled with silicon hollowfibre that allows better circulation of air and reduces build up of moisture fantastic value for money 100 polyester care instructions bolster is washable at 40comes in pillow coverfilling 100 aerated polyester silicon hollowfibrecover cover 100 polyester