Choosing the right size mattress topper ensures a proper fit and optimal comfort. Mattress toppers come in standard sizes matching mattress dimensions, such as Twin, Full, Queen, King, and California King. Measure your mattress accurately, including depth, to select a topper that fits well without slipping. Some toppers offer deep pockets or elastic edges to accommodate thicker mattresses. Selecting a correctly sized topper helps maintain a smooth sleeping surface and prevents shifting during use.

The ideal thickness of a mattress topper depends on your comfort needs and mattress condition. Generally, mattress toppers range from 1.5 to 4 inches thick. A 2 to 3-inch topper can add noticeable softness and pressure relief without altering mattress support too much. Thicker toppers, like 4 inches, offer more cushioning and can help rejuvenate an older mattress. However, very thick toppers might feel too soft for some sleepers. Consider your preferred firmness and mattress type when choosing thickness to enhance comfort effectively.

Proper care extends the life of your mattress topper and keeps it fresh. Many mattress toppers are machine washable, but always check the care label first. For washable toppers, use a gentle cycle with mild detergent and air dry or tumble dry on low heat. For foam or memory foam toppers, spot cleaning with a mild detergent and water is recommended to avoid damage. Regularly airing out your topper and using a mattress protector can also help maintain cleanliness and hygiene.