- A warm weather duvet insert is specifically designed to provide lightweight insulation and breathability, making it an ideal choice for hot summer nights. Unlike heavy down or synthetic duvets that can trap heat and leave you feeling suffocated, a warm weather duvet insert is made with materials that allow air to circulate freely, keeping you cool and comfortable throughout the night.
COVERLET
Top Sheet or Flat Sheet
Anatomy of a Bed Glossary



Fitted medical bed sheets are also an important part of a hospital sheet set because fitted medical bed sheets are designed to fit securely to the mattress and stay in place, even when the bed is adjusted or moved. This is especially important for electric beds, as the fitted medical bed sheets need to accommodate the movement and positioning of the bed without shifting.



Most sheet sets typically include a flat sheet, fitted sheet, and one or two pillowcases. There’s not much need for wondering if you need a flat or fitted sheet for this reason — both are useful and usually come as a package deal. Some other sheet sets, like those Casper offers, also include a duvet cover.
Upland
We've demystified bed linen jargon to help you choose the best bed linen that's right for you:
First of all, because linen’s flax fibers are slightly longer than those of cotton and wrapped a little tighter, linen sheets are stronger which means they will last much longer. If softness is a factor for you, you may want to consider cotton, though. Flax fibers are much rougher than cotton resulting in slightly crisper fabric. But the great thing about linen is that it gets softer after each wash, so essentially it gets better with time.
Moisture-wicking and cooling, bamboo is ideal for anyone who sweats or overheats at night. It's also naturally hypoallergenic and anti-bacterial, so ideal for anyone with sensitive skin, asthma, or allergies. The moisture-wicking properties work to repel dust mites on sheets, which can cause common indoor allergy symptoms like nasal congestion and sneezing.