Made in Portugal. STANDARD 100 by OEKO-TEX® Certified: Safely tested to be free from harmful chemicals. Certificate 2539CIT, CITEVE. 100% cotton percale. Satin and merrow stitching. 310 thread count. Machine wash warm with like colors. Tumble dry low and pull straight out of dryer to avoid wrinkles. Twin set includes flat and fitted sheets (for a 14”D mattress), plus one Standard pillowcase. Full and Queen sets include flat and fitted sheets (for a 16"D mattress), plus two Standard pillowcases. King and Cal King sets include flat and fitted sheets (for a 16"D mattress), plus two King pillowcases.