From J. Queen New York, this sheet set features: 

Add a luxurious feel to your adjustable bedding with this super soft Adjustable Bed Split Sheet Set by J. Queen New York. Featuring Royal Fit Technology, a patented design, which guarantees to fit every mattress up to 22 inches perfectly, every time. The unique fitted sheet construction stretches to fit the deepest mattress. Unlike most fitted sheets that do not fit well or stay in place throughout the night, our fitted sheet solution will never shift or slip off.

• Cotton 
• 500 thread count
• Silky-smooth hand-feel
• Machine washable 

King set includes: 

• King fitted sheet approx. 78" W x 80" L + 7" - 20"
• King flat sheet approx. 118" W x 104" L 
• Two king pillowcases approx. 20" W x 40" L 

California king set includes:

• California king fitted sheet approx. 72" W x 84" L + 7" - 20"
• California king flat sheet approx. 118" W x 104" L 
• Two king pillowcases approx. 20" W x 40" L 

Imported.