Its extra deep pocket design is deeper than the average and fits up to 26cm mattress. The elasticity of the fabric and deep encasement allows fitting perfectly of all sizes of mattresses. Our deep-fitted sheet is made with a high-quality, long-lasting fabric that keeps the sheet looking bright and maintaining its shape for a long time. The sheet's shrink-resistant properties ensure that it maintains its shape even after multiple washings. Avoid using fabric softeners on microfiber as they can clog the spaces in the fibers and make the fabric ineffective. Also, be sure to wash microfiber separately from terry cloth or other materials that shed lint. Instead, wash with lint-free items such as jeans or T-shirts