I cup bras that lift and support you — without reminding you they're there.

I cup women live with a frustration that most bra shoppers never encounter — not just that their size is unavailable, but that when they do find it, the bra is built like an afterthought. Wide underwires that sit on top of breast tissue instead of beneath it. Bands that stretch out by noon. Straps that were designed for a fraction of the weight they're being asked to carry. At Fit Au Max Lingerie, every I cup bra comes from Polish and French makers who engineer for this cup volume specifically — because an I cup bust deserves a bra that was built for it from the start.

Why these bras work when others don't:

• Narrow underwire construction — traces the exact contour of an I cup breast from beneath, channeling weight upward and forward rather than pressing inward against sensitive tissue the way wide US-style wires do
• Side boning — rigid structural panels on each side of the bra that prevent the cups from collapsing outward under the considerable weight of an I cup bust throughout the day
• Flat center gore — engineered to stay flush against your sternum even under the deep forward projection an I cup carries, keeping both cups correctly positioned and symmetrical all day
• Wide, adjustable straps — substantially broader than standard straps and reinforced to carry I cup weight across the full shoulder surface without narrowing, digging, or leaving grooves

Sizes & Fit

• Band sizes 28–50
• Cup sizes D through L — with dedicated stock in the hard-to-find I cup sizes that disappear fast: 34I, 36I, 38I, 40I and 42I
• I cup in European sizing may be labeled differently than your US size — use our Bra Sizing Chart before ordering to confirm your correct Polish or French equivalent
• Sister sizing available — if your exact I cup size is unavailable, we'll help you find the closest equivalent fit

Brands Gorsenia · WiesMANN · Sans Complexe · Nessa

Free shipping on orders $75+. Ships across the United States.