Fabrics: Quilts & Sheets

What is denier?
Fabric denier (D) is a unit of measurement used to describe the thickness of individual fibers in a textile.
In general, higher denier fabrics use thicker fibers, which can improve durability but add weight. Lower denier fabrics use finer fibers, helping reduce weight and bulk.
However, denier alone doesn’t determine how a fabric feels or performs. Comfort, softness, and durability also depend on the fabric’s weave, construction, and finishing. That’s why two fabrics with the same denier can feel very different in real-world use.
Understanding denier helps balance weight, durability, and feel when choosing the right sleep system for your needs.
Fills: Quilts & Sheets

Fill-Power Explained
Down quality is measured by its fill-power, which in simple terms is a measure of the down cluster’s size. Larger clusters trap more air and are both warmer and lighter compared to lower quality down. The larger the down cluster, the higher the fill-power rating.
Fill-power represents how many cubic inches one ounce of down will occupy. If one ounce of down takes up 700 cubic inches of space, it is rated as 700 fill-power down. This means that less will be needed to achieve the same warmth as a 600 fill-power or lower down.
There are 3 different grades of down often used: 550 to 650 fill-power (high quality downs), 650 to 750 fill-power (performance downs), and 750 to 900 fill-power (premium downs—the lightest, warmest, and most expensive).
Fabrics: Mattresses
Insulations: Mattresses

What is R-value?
R-value is a measure to quantify insulation's ability to resist heat. In other words, it's a measure of thermal resistance. The higher the R-value, the greater the thermal resistance and the better it will keep you insulated from the ground below.
All Zenbivy mattresses deliver R4.5+ for EN/ISO-matched performance.

