Mattresses, Toppers and Bed Bases

Bed size, including the unusual ones

Standard sizes run from Twin and Twin XL through Full and Queen to King, and the mattress must match the frame exactly, so measure the bed first. Twin XL is longer than Twin, which suits tall sleepers and many dorm beds. Not everything here is a domestic size: hospital and care-bed mattresses are narrow, about 36 inches wide, in 80 or 84 inch lengths, and truck-bed mattresses are cut for a cargo space. A protector or topper has to match your mattress size, and a fitted cover needs pockets deep enough for the thickness.

Firmness, thickness and what a topper cannot fix

Comfort is rated from soft and plush through medium to firm and extra firm; side sleepers generally prefer softer surfaces and stomach sleepers firmer ones. Thickness separates a mattress from a topper: a 2 or 3 inch layer changes the feel of a bed but cannot rescue a sagging one, while 6 inch and deeper foam is a mattress in its own right. Memory foam can sleep warm unless the listing mentions cooling or breathable construction, and a pillow top adds a softer layer. Airbeds suit guests, not nightly use.

Questions about Mattresses, Toppers and Bed Bases

Will a mattress topper fix a sagging mattress?

It can soften a firm bed or add cushioning, but it cannot support a mattress that has sunk in the middle, because it simply follows the dip. Use a topper to change the feel of a sound mattress, not to repair a worn-out one.

What mattress size fits a hospital-style bed?

Hospital and care beds are usually narrower than a Twin, so a standard size will not fit. Match the exact width and length in the listing, such as 36 by 80 or 36 by 84 inches, and check that the mattress suits an adjustable frame.

How does a memory foam mattress differ from a hybrid?

Memory foam contours closely and absorbs motion but can sleep warm. A hybrid puts foam comfort layers over a coil spring core, giving more bounce and airflow. Cooling or breathable tailoring in the listing points to features aimed at heat.