Building Large Size Bras in Inestory

The construction, design and material requirements of a plus size bra are completely different from those of a small cup bra. What do you need to consider when making a large size bra? Here we show the sizing work for Inestory bras.


Large breasts require a different type of support than small breasts

This means that larger bra sizes have completely different requirements for how they are designed and manufactured. Bra manufacturers often use different types of construction or switch to stronger materials for larger bras. For example, the cups may have an extra lining or a different cut. Or, a larger size bra may not be as large as a smaller size bra.

At Inestory, we work with a different philosophy. When we design and choose materials for a bra, we always consider how it will look and work, for example, an F-cup, and choose materials that fit larger sizes right from the start. We then carry the smaller size bras around, which means they get the added benefit of a sturdier material.

It is important that the bra feels the same for smaller sizes as it does for larger sizes.


An example of this is the width of the elastic used. It is common to use a wider elastic on larger sizes than on smaller sizes. At Inestory, we do not have a cut-off point for this, but rather use wide elastic on all sizes. The reason is simple: wide elastic is more comfortable. A narrower elastic may look neater, but some people find that when wearing a tighter band size it cuts into the body. To provide great support, it is important that the bra is not too loose around the torso.

Different sizes of elastic bra straps for a flexible and comfortable bra

The elastic used to fit the body at the lower edge of the bra strap is available in several widths.


What is the difference between small and large straps?

Our wide padded comfort straps have become a hallmark of Inestory and are padded even in the smallest sizes. Although you may not need this type of shoulder strap to take the load off your shoulders if you have a small chest, we choose to use these straps in the smaller sizes because they are so comfortable. Like we said, you always get a little extra comfort in smaller sizes. There is usually a cutoff point at an E cup, which is when we increase the width of the straps by about 3mm.


On bras without padded straps, the width varies from 14 to 23 mm (see below). Most start at 20mm, so our narrow straps are still quite wide overall compared to many other brands. Some models have a cutout in the straps at the E cup, at which point the width increases to 23 mm.

Narrow straps used to make bras
Our most common narrow straps are available in 3 sizes.

What is the difference between the back of a small size and a large size bra?

The number of vertical hook and eye fasteners increases. the standard number of straps for sizes 70-85 is two for A-D cups and three for E cups and up. For band sizes 90 and above, there are at least three hook-and-eye fasteners even for small cups.
For larger cups or band sizes, the number of hook-and-eye closures increases.
Some bra models have an extra-wide back with four hook-and-eye closures for all band sizes up to D cup and five for E cup and up. The width of the back is critical to the support provided by these models.


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