Our comfortable, durable fitted sheet hugs your mattress with a continuous elastic hem. The softest linen you’ll ever touch – ours is crafted in Portugal from the finest European flax and garment washed for a perfectly lived-in feel from night one. Made of 100% European flax. Learn more on the Blog ↗. Has continuous elastic hem and fits mattresses up to 16 inches deep. Made in Portugal. Learn more on how to Care for Your Linen Sheets, Layer and Style Your Bed and which College Dorm Room Essentials You Should Bring to School now on the Blog. OEKO-TEX® STANDARD 100 16.HUS.93300 Hohenstein HTTI.