From the Soprano collection by  Peacock Alley, these sheet features:

For those in the know, Soprano sheets and Peacock Alley are almost synonymous. They have been a part of our line for decades because of their supreme quality and buttery soft feel. Soprano is a sheet that everyone can enjoy leading to a more comfortable night's sleep for years to come.

• 100% extra-long staple cotton
• 420 thread count sateen sheeting
• Flat sheet features a single row satin stitch embroidery on the hem - 4" cuff
• All sizes of our fitted sheets are sewn with a 17" gusset and fit up to a 21" mattress
• We have placed a sewn in sizing label in the bottom left-hand corner of our fitted sheet to easily dress your bed
• Standard 100 by OEKO-TEX® Certified
• Made in Portugal
• Machine wash cold, gentle cycle. Do not mix colors, do not bleach or use fabric softener. Tumble dry low, remove promptly. Warm iron, if needed. May be professionally cleaned.
• Available in a duvet cover, shams, euro shams, pillow cases and as a sheet set.

Flat sheet specification:

• Twin/Twin XL flat sheet approx. 75" x 112"
• Full/Queen flat sheet  approx. 96" x 115"
• King/Cal King flat sheet approx.  115" x 115"

Fitted sheet specification:

• Twin fitted sheet approx. 39" x 75"
• Twin XL fitted sheet approx. 39" x 80"
• Full fitted sheet approx. 54" x 75" 
• Queen fitted sheet approx.  60" x 80"
• King fitted sheet approx. 78" x 80"
• California King fitted sheet approx. 72" x 84"

Imported.