A second skin for your mattress, the Bedgear MattresSkin mattress encasement protects your sleep environment and keeps your bed looking and feeling like new. Flexible, breathable barriers and interior sealed seams ensure that dust, dander and other allergens stay out of your mattress. Machine washable, its stretchable knit fabric is hypoallergenic, waterproof and proven to prevent bed bug infestations. This moisture-wicking mattress encasement remains securely fastened with an invisible zipper and Velcro lock. Conveniently designed, its three-side opening allows you to easily slip the mattress inside. For a cooling sleep experience, layer this product beneath a Performance BEDGEAR Ver-Tex mattress protector.