Material and construction Pure cotton quilted fabric that is soft, comfortable, and skinfriendly. The fitted sheet includes a polyester fiber filling for added loft. Fit and protection 360degree allround wrapping with an elastic band around the entire edge to protect the mattress. The sheet is designed to fit mattresses 530 cm deep and stay in place during movement. Fit technology and performance Snug, stretchfit design with stretch technology to prevent slipping, sliding, or bunching even with active sleepers. Elastic runs all around for a secure, lasting hold on large mattresses. Seasonal comfort Breathable fabric helps you stay cool in summer and warm in winter, providing allseason use. Durability and ease of use Durable 360degree elastic ensures a precise fit around the mattress, making it easy to put on and take off while preventing slipping. What's included 1 fitted sheet and 2 pillowcases, each pillowcase measuring 48 x 74 cm. Use scenarios Everyday family use on beds with depths from 5 to 30 cm, including large or irregular mattresses, where a secure, nonslip fit is important. Hot sleeper or summer months, where breathable material helps maintain a cooler sleeping surface. Guest room or shared accommodation with mattresses of varying depths, requiring a reliable, allround elastic fit that stays in place.