TWO 100% Merino Wool Pillow Lambswool Wool Fleece Pillow Protector, Standard 18" x 30" 100% Wool Woolmarked Natural Pillows ! Merino Wool keeps you dry and your body at the right temperature which offers relief from arthritis, rheumatism and other aches and pains. Merino Wool is resistant to dust mites making it a much healthier way to sleep. Size: 75/45 cm approx.