How do I know if I need deep pocket fitted sheets?

Measure the complete height and thickness of your mattress. Pillow-top mattresses can billow up, making what might seem like a deep enough sheet ride up on the edges. To determine the actual sheet measurements required for full coverage, lay a straightedge on the highest part of your mattress so it sticks out from the edge of your bed. Ensure it's completely horizontal, and then measure the distance from the mattress' bottom to the straightedge with a yardstick or tape measure. If this reveals a depth greater than 12 inches, you probably need deep pocket sheets.

What are the best sheets for memory foam mattresses?

Because memory foam mattresses retain body heat, it's best to avoid polyester or microfiber sheets. Organic materials such as cotton and Rayon from bamboo work great for these mattresses, with higher thread-count options offering exceptional breathability in any season. Also, percale sheets work better on these mattresses than sateen as percale has a matte texture while sateen boasts a polished weave that retains heat.

What are the coolest and warmest bed sheet materials?

Egyptian, Pima, and Supima cotton tend to be the coolest sheet and pillowcase options, with linen, Rayon from bamboo, and percale coming close behind. Flannel, fleece, and cotton-blended polyester make excellent choices when your goal is to retain warmth in the colder winter months. For year-round comfort in more temperate areas, cotton in all its various blends and weaves makes the best all-around choice for both coolness and warmth.