The healthisleep range from shire has been specifically designed with your health requirements in mind the duo temp is available with a combination of both a warm and cool sides to help keep you warm on those cold winder nights with layers of pure new lambs wool and cashmere and when summer comes along you can flip the mattress for a cooler more comfortable nights sleep 1500 pocket springs warm side fillings include cashmere fabric cover polyester pure new wool with cashmere pure lambsw