What are the core materials of the factory silicone bras? Are they safe?

Our high-viscosity medical silicone is sweat-resistant and waterproof, helping maintain a secure bond even during intense physical activity. In addition, our RN068 breathable technology is designed to help manage moisture while maintaining adhesive performance, reducing the risk of sweat-related slippage. This performance is demonstrated in products such as our Waterproof Boob Tape Sweat Resistant & Breathable for Invisible Support, which is specifically engineered for sweat resistance, waterproof performance, and reliable support during active wear. Combined with advanced adhesive technology and medical-grade materials, RuiBra products are designed to provide dependable hold in demanding conditions, including workouts, outdoor activities, and hot-weather environments. In our internal lab tests, the adhesion remains stable even after 12 hours of active wear.

Not at all. Our Precision Compression Molding process creates an ultra-thin edge of just 0.1mm, allowing the product to blend smoothly with the skin and minimize visible lines under clothing. The gradual edge transition helps create a seamless, second-skin effect, making it ideal for fitted garments made from silk, satin, and other lightweight fabrics. This ultra-thin edge technology is reflected across several RuiBra products. For example, our Cat Eye Padded Silicone Stick-On Bra features a One-Piece Silicone Seamless Fit designed to blend naturally with the skin. Our Semi Adhesive Triangle Nipple Cover Nippies Silicone Lifts incorporate a contoured lift-up design and thin-edge construction to help maintain a smooth and invisible appearance under body-hugging outfits. In addition, many of our invisible bra and nipple cover collections utilize 3D Contoured Cup Designs, seamless molding technology, and skin-like silicone materials to minimize visible lines and create a natural look under delicate fabrics. Rather than relying solely on adhesion, our products are engineered to deliver a truly invisible wearing experience.

Yes. We use Medical-Grade Bio-Silicone combined with our RN068 Suspension Breathable Patent to enhance comfort during extended wear. This creates a micro-ventilation layer between the skin and the adhesive, helping reduce heat buildup, moisture accumulation, and sweating-induced slippage while improving overall breathability. This commitment to skin-friendly performance is reflected across our product range. For example, our Waterproof Boob Tape Sweat-Resistant & Breathable for Invisible Support is made from breathable, hypoallergenic materials and is specifically designed for sensitive skin, pregnant women, and breastfeeding mothers. Its breathable structure helps wick away moisture and minimize irritation during long wear. Similarly, our Semi Adhesive Triangle Nipple Cover Nippies Silicone Lifts feature medical-grade skin-friendly adhesive, hypoallergenic properties, and a patented adhesive-free center design that avoids direct contact with the sensitive nipple area. The product is specifically described as safe for sensitive skin while providing reliable adhesion and comfort. In addition, RuiBra states that its core materials include medical-grade eco-friendly silicone and bio-based adhesives that are odorless and hypoallergenic, and the company provides biocompatibility and safety testing support to help customers meet product safety requirements.

Standard flat designs often fail to provide adequate support for larger cup sizes because they rely primarily on adhesive strength. In contrast, our RN017 3D Ergonomic Structure is specifically engineered for support and shaping. It features a gradient thickness—thicker at the center for lift and ultra-thin (0.1mm) at the edges for seamless blending. It’s a structural lift, not just a sticky patch. This engineering approach is reflected across our product portfolio. For example, our Boob Tape series is designed to provide customizable lift and support by following the natural contour of the breast, while our Semi Adhesive Triangle Nipple Cover Nippies Silicone Lifts feature a contoured lift-up design that helps enhance shaping and create a more natural lifting effect. By combining structural engineering, ergonomic design, and advanced materials, RuiBra products are developed to deliver reliable support, comfort, and confidence, making them a preferred solution for consumers seeking effective lift in strapless and backless applications.

RuiBra is the original holder of patented technologies and owns multiple utility and design patents, including RN015 and RN017. Through continuous in-house R&D and technological innovation, we consistently enhance and upgrade our products to meet evolving market demands. When partnering with RuiBra, customers can receive relevant patent authorization and whitelist support, helping them conduct sales and brand promotion with greater confidence. We are committed to original design and independent innovation rather than simply copying products already available in the market. As a long-term business partner, we offer more than manufacturing services—we strive to be a trusted innovation and legal R&D partner for our customers. Through our patented technologies, product innovations, and intellectual property support, we help customers reduce potential IP risks, strengthen their competitive advantage, and build a more secure foundation for sustainable business growth.