Bras size 105C

Why does the bra size 105C deserve special attention?

Wearing a size 105C involves specific physical requirements that standard bras do not address. A C cup on a 105 cm band size represents a volume that demands carefully designed technical solutions: weight distribution, active back support, wide straps that do not dig into the shoulders.

But contrary to what too many brands suggest, these technical requirements do not conflict with style. They simply define it differently.

Size 105C: understanding your size and its equivalents

A bra size is made up of two measurements: the band size (here 105 cm) and the cup, which indicates the difference between the bust measurement and the band size. A C cup bra corresponds to a difference of approximately 12 to 14 cm. This means that several sizes are equivalent — they accommodate the same bust volume, but with a different band size.

Cup equivalents around size 105C:

Good to know: If your 105C bra feels too loose in the band but comfortable in the cup, try the 100D. If the cup pulls but the band fits well, the 105D will be more suitable.

You can consult our special bra size guide.

The essential criteria for optimal support in size 105C

A well-designed size 105C bra meets precise criteria. Here is what to check before buying:

• The width of the back band: It should be at least 7 cm wide to distribute pressure across the back correctly. A band that is too narrow rides up and loses all effectiveness by mid-morning.
• The number of hook-and-eye rows: Choose models with 3 rows of hooks (or even 4) for adjustable and stable support. Two rows of hooks are generally not sufficient from band size 100 onwards.
• Underwire or no underwire: A well-positioned underwire supports and structures the cup. But it is not essential: a quality wire-free bra with reinforced construction can offer comparable support with superior everyday comfort.
• The width of the straps: Straps of at least 2 cm wide prevent marks and shoulder pain. Some of our models feature padded straps for added comfort.

Style and shape: size 105C sacrifices nothing

It is time to put an end to the idea that plus size bras are necessarily beige, functional and plain. Our size 105C collection includes balconette styles that show décolletage without overexposing, lace on shaping underwires, ultra-thin black models for fitted outfits, bralettes with crossed straps for the weekend, and minimiser bras that slim the silhouette without compressing.

Support is a requirement. Style is a right. At Sans Complexe Lingerie, both coexist in every stitch.

Which type of 105C bra to choose for your daily life?

105C bra without underwire: long-lasting comfort

The wire-free bra is often mistakenly seen as a "rest" style. In reality, a well-constructed wire-free bra with moulded cups, double fabric and a wide back band offers solid support for 8 to 10 hours without fatigue.

Ideal for: office days, travel, women who experience discomfort with underwires by the end of the day, and anyone seeking absolute comfort without compromising on fit.

Our wire-free models in size 105C systematically feature a widened back band and wide adjustable straps.

105C bra with underwire: enhanced support

For busts that require a defined shape, clear separation or maximum support under fitted clothing, the underwire bra remains the most effective solution, provided it is correctly positioned.

A well-sized underwire must fully encircle the cup without touching the sternum or pinching under the arm. At Sans Complexe Lingerie, every underwire is calibrated according to the band size, not just the cup, for a level of precision that is rarely matched.

Bras size 95C | Bras size 110C | Bras size 95D | Bras size 100D