NEIYIN Bra-in Series

Built around the “Bra-in” concept, this design champions a “barely-there” feel that liberates the body from constriction and returns to natural comfort. Through seamless thermal bonding technology, the bra pads are invisibly integrated into the garments. This frees women from the restrictive pressure of traditional bras and banishes embarrassing pad outlines, presenting a smooth, elegant, and seamless look.
Refined through ergonomic principles and extensive fitting data, the 3D teardrop cups feature a 1 cm center that tapers to an ultra-thin 0.1 cm at the edges. This allows them to perfectly contour to the natural curves of the bust, providing comfortable coverage while blending seamlessly with the outer fabric to prevent any visible bulging. Inside, a honeycomb gel-strip provides soft yet stable support. Paired with a center bridge design, it gently lifts and gathers the bust inward, effectively preventing cup gaping and shifting while naturally shaping a full, rounded silhouette. Breathability is specifically optimized for different seasons. The summer version features over 7,000 ventilation holes (5 mm in diameter), achieving a 60% ventilation rate to keep the wearer dry and comfortable during prolonged use. Meanwhile, the winter version incorporates over 4,000 pores to balance warmth with moderate airflow. The fixed-pad structure is fully machine-washable, saving wearers the hassle of tedious manual reshaping. Adaptable to various close-fitting tops like T-shirts, camisoles and base layers, this versatile design accommodates A to D cup sizes, allowing more women to confidently embrace the effortless comfort of a “bra-free” lifestyle.