Split King and Split Cal King sizes will come with (2) protectors of your chosen size. Our Bamboo Mattress Protector completely covers the top and sides of your mattress, fitting like a fitted sheet to create a 5-sided barrier against moisture, stains, allergens, dust mites, mold, and mildew.  Experience quiet, comfortable protection from the familiar softness of 100% bamboo rayon. Loved for its breathable, moisture-wicking properties, the soft, gentle touch of bamboo helps to keep you resting comfortably throughout the night. This award-winning protector offers rich, cozy comfort that feels like home. Women's Choice Award: Our Bamboo mattress protectors are one of many Purecare products to have earned the official seal of the Women’s Choice Award—learn more.