Dual-Lock System Keep a Tight Fit: The fitted sheet features a 360° fully elastic strap + drawstring design to keep the fitted sheet snugly in place, no more slipping or bunching. Please pull the drawstring as hard as possible to tighten it to fit the mattress(Please refer to our main image video or the fifth video in the fourth section of A+ to see how to keep tight)Deep Pocket Fits 14" to 22" Mattress: The size of the fitted queen sheet is 60" wide by 80" long with 22" deep pocket, which can perfectly fits from 14'' to 22'' mattress, Our fitted sheets are designed to shrink, so if you haven't washed them, they may appear too large when placed over your mattress. Don't worry, they will fit snugly after washing.100% Long-Staple Cotton for Cloud-Like Softness: Crafted from long-staple cotton with extra-long fibers and superior fineness, delivering an ultra-soft, cloud-like touch. The natural breathability of the cotton ensures optimal temperature regulation, keeping you cool in summer and cozy in winter for uninterrupted, comfortable sleep all night longGets Softer With Every Wash: Thanks to its long-staple cotton construction and 1000 thread count silky sateen weave, these sheet set actually improve with time. The durable fibers gently relax during washing, reducing friction while maintaining their strength. With each cycle, the fabric becomes even softerEasy to Care: These sheets are OEKO-TEX Standard 100 certified for high safety standards. Simply machine wash them in cold water and get softer, do not use bleach and fabric softener. Please tie the rope in a knot when cleaning to prevent the drawstring lock from falling offWorry-free Shopping- Our sheets all passed the OEKO-TEX test, the pulling test and pilling test, we promised you will have a good hassle-free shopping experience for 12 months if it's due to quality issue. And we have a professional service team, if you have any question, please contact us via Amazon.