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October 16, 2026

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Mattress and Bedding Glossary: The Terms You Need To Know, Defined

By Sabrina Almeida
The mattress industry can feel overwhelming: with so many terms, it can be hard to make sense of it all, never mind decide which product is right for you. To help make your shopping journey easier, we put together a glossary of all the major terms you need to know about mattresses and bedding. From the difference between silk and satin, to understanding what a hybrid mattress is, we break it all down here.

Mattresses Types, Defined

Close up of the top of an Endy mattress and someone pushing on itAll-Foam Mattress: a mattress made with multiple layers of foam (often of different densities), known for their motion isolation and pressure relief.Hybrid Mattress: a mattress that combines foam and coil layers to provide comfort and support, known for their breathability and lumbar support.Latex Mattress: a mattress that is made with natural or synthetic latex, often chosen for their durability and support.Innerspring Mattress: a mattress whose core is made of coiled springs to provide support.

Endy Products, Defined

Woman sitting cross-legged on top of an Endy Elevate HybridEndy Mattress: a made in Canada, all-foam mattress that comes compressed and shipped in a box. Great for motion isolation and pressure relief.Endy Elevate Hybrid Mattress: a made in Canada hybrid mattress (combination of foam and coils) that comes compressed and shipped in a box. Great for cooling and extra lumbar support.Everyday Sleep Set: an all-in-one bedding set that includes an all-season duvet, Everyday Pillow(s), pillowcase(s), flat sheet, fitted sheet, and mattress protector.Enhanced Sleep Set: our upgraded all-in-one bedding set that includes an all-season duvet, customizable pillow(s), pillow protector(s), percale flat sheet, percale fitted sheet, and mattress protector.Everyday Pillow: a pillow made with premium, hypoallergenic down-alternative fill that mimics the plush feel of down.Endy Customizable Pillow: a pillow that allows you to add or remove memory foam fill to fine-tune the height and firmness for support. The extra foam can be stored in the provided mesh travel pillow.Endy Memory Foam Pillow: a memory foam pillow with a charcoal core that contours to your neck. It is responsive, breathable, hypoallergenic and antimicrobial.

Bedding, Defined

Green and white sheets on a twin size mattressFlat Sheet: a sheet that usually goes between you and the duvet/comforter.Fitted Sheet: a sheet with elasticized corners that goes tightly over the mattress.Mattress Protector: a cover placed directly over the mattress that protects it from stains, spills and allergens.Duvet: a soft, flat blanket that can be filled with either down, feathers, or alternative materials. A duvet cover is placed on top of it, making it a great way to change the look of your room.Baffle Box: in down comforters, boxed sections are sewn in to prevent the filling from moving and creating empty patches.Fill Power: a way to quantify how fluffy or insulating down is. The higher the fill power, the higher the quality.Comforter: a thick, warm blanket filled with insulating material and sewn shut. This is placed directly on a bed and generally does not have a cover.Mattress Topper: padding placed on top of a mattress to adjust how firm a mattress feels and give either more comfort or support.

Materials, Defined

Cross-section breakdown of the Endy Hybrid mattress, showing foam and coilsMemory Foam: foam that offers support and pressure relief by conforming to the shape of the body lying on it.Open-Cell Foam: foam with interconnected chambers instead of closed; provides pressure relief like traditional memory foam while also allowing air to move through it more easily.Coil: metal springs (usually made of steel) that support a mattress and make it more durable, while also helping to keep your spine aligned.Tencel: sustainable fabric made from wood pulp, known for being breathable and a great pick for sheets for hot sleepersPercale Cotton: a weave of cotton where the threads are one over and one under, for a more loose, breathable weave and crisp feel. A great pick for hot sleepers.Sateen Cotton: a weave of cotton where the threads are three (or four) over and one under, for a drapier, warmer weave and glossy surface.Satin: a fabric with one smooth, shiny side and one dull side; sometimes made of silk, often used for luxury bedding.Silk: a fine protein fiber produced by silkworms or other insect larvae. A popular choice for pillowcases to prevent hair frizz and breakage.
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