Wireless Bras

A wireless bra relies solely on the quality of its band, straps and internal structure to provide support, without a metal or plastic underwire around the cup. Contrary to popular belief, this isn't just for smaller busts: well designed, a plus-size bra without underwire can offer strong support thanks to wide straps, a reinforced band and side support panels that distribute the weight of the bust without compressing a single point.

It's also a matter of everyday comfort: with no pressure point under the bust, it's particularly suited to women with sensitive breasts, mums-to-be or new mums, or anyone simply looking for softer everyday lingerie. Many of our customers also ask whether going without underwire is better for circulation or back comfort: by removing any rigid pressure point, a well-fitted wireless style reduces tension, especially during long days or for more sensitive breasts.

At Sans Complexe Paris, we design our wireless styles to be just as shaping and supportive as an underwired model. You can also read our article on wearing an underwire bra to objectively compare both approaches and choose what best suits your shape and habits.

Our wireless bra collection at Sans Complexe Paris

Plus-size wireless bras

Our plus-size wireless bras are designed from cup C to cup J, with wide adjustable straps, a reinforced band and built-in side support panels that provide strong support without ever sacrificing comfort. Some styles also come in a wireless push-up version, for a natural shape and enhancing lift without giving up the softness of a wireless bra.

Cotton wireless bras

For sensitive skin or days when comfort comes first, our cotton wireless bra range favours soft, breathable fabrics. Cotton limits irritation, regulates temperature better and is perfect for everyday wear, including during breastfeeding: our wireless nursing bras combine practical openings with reliable support, with no underwire against breasts that can be more sensitive during this period.

Wireless bras for the night

The wireless night bra is designed to support your bust while you sleep, with no constriction or pressure point, while still offering light support that can be reassuring for fuller busts. A stretchy fabric, a wide band and the complete absence of rigidity make it a preferred option after surgery, during pregnancy, or simply for the most comfortable nights.

How to choose the right wireless bra

Which cup size works without underwire (up to cup J)

Contrary to popular belief, support without underwire isn't limited to smaller cups. Thanks to wide straps, a well-fitted band and technical side support panels, our wireless styles effectively support a bust up to cup J. The key is a precise fit: a band that's too loose or poorly adjusted straps are the main causes of insufficient support, far more than the absence of underwire itself. To check your exact cup and band size, see our size guide before choosing your style.

Which fabric to choose depending on use

The choice of fabric mainly depends on how you'll wear it: cotton for everyday wear and sensitive skin, stretch microfibre for a natural, discreet shape under clothing, or soft, seamless fabrics for the night and postpartum. If you're torn between a wireless bra and a wireless bralette, keep in mind that a bralette generally offers a more sporty, enveloping support, while a wireless bra keeps a more structured shape, with pre-formed cups and push-up options. To better understand the technical role of an underwire and what an underwire is for in a classic bra, our dedicated guide details the structural differences between the two types of support.