Wellrest 300 Thread-Count Sateen Box Cotton Flexwall Mattress Pad, Twin Size, White Cotton Rejuvenates and protects your mattress; Designed to provide a layer of comfort and warmth between you and your mattress Constructed with a 300 thread-count cotton sateen top fabric that breathes and keeps you more comfortable throughout the night Built with an amazing 8-ounces of Ultra Fresh Anti Microbial Fiber Fill that provides superior support and loft Hypo-allergenic makes it perfect for the sensitive sleeper; 12" Straight Diamond Pattern sewn into the pad to keep the fill from shifting or bunching Elasticized Tailor Fit Skirt keeps the pad in place and promotes better sheet fit; Guaranteed to fit mattresses up to 19-Inch