The Healthy Sleep™ Ultra-Tech Advanced mattress protector with TENCEL® fiber provides a hypoallergenic, temperature regulating sleep surface that stays cool and dry while keeping moisture away. The high performance fabric helps you sleep more comfortably and is a more hygienic option combined with the power of silpure anti-microbial silver treatment. Also 99.9% dust mite and allergen resistant. Machine wash in warm or cold water. Tumble dry on low or medium heat. Do not dry clean. No ironing needed. Bleaching will void warranty.