Receiving a medical grade silicone adhesive bra sample is only the first step in supplier evaluation. Before approving the product, buyers should verify its composition, skin-contact documentation, adhesive performance, care requirements, fit, appearance, quality controls, and customization options. For Xinrui's V-shaped invisible sticky bra inserts, particular attention should be given to the stated 95% cotton and 5% silicone fabric composition, hand-wash instructions, available testing records, and sample specifications.
A structured sample review helps ensure that the product matches both the supplier's claims and the intended end use. The following areas should be discussed with the manufacturer:
Start by asking the supplier to identify every material used in the sample and confirm that the delivered item matches the approved specification. Xinrui's product information describes the fabric as 95% cotton and 5% silicone. Buyers should also ask which documents support the product's skin-contact suitability and whether the test evidence applies directly to the sample being evaluated.
Xinrui lists an ISO 10993 certificate for product categories including nipple covers, boob tape, silicone bras, adhesive bras, and bra pads. This information should be reviewed together with the relevant test scope, product identification, and certificate validity. A “medical grade” description should not be accepted as a substitute for product-specific documentation.
Adhesive testing should reflect the complete customer use cycle. Ask how the adhesive performs when the product is first applied, worn, removed, cleaned, and used again. The sample should be checked for secure positioning, comfort, residue, edge lifting, and changes in adhesion after hand washing.
The available product information specifies hand wash care but does not provide a numerical wear duration, waterproof rating, or guaranteed reuse count. These details should therefore be requested in writing or supported by test data. During evaluation, follow the supplier's cleaning instructions precisely so that the results represent the recommended use conditions.
Confirm that the delivered sample has the listed V-shaped full-cup profile and measures approximately 11 cm by 11 cm. The available colors are nude and black. Review both colors under the intended garments to determine whether the edges, surface, and shade remain discreet under formalwear and fitted clothing.
It is also important to clarify how the product is intended to be used. Ask whether it functions as an insert, a complete adhesive bra solution, or both. Test it with backless dresses, strapless clothing, deep-V styles, camisoles, bridal garments, and other target apparel. The correct shape and size may vary depending on the garment cut and the wearer's requirements.
Quality discussions should cover inspection at each stage of production. Xinrui identifies incoming raw-material inspection, in-process inspection, and finished-product inspection as part of its quality process. Buyers should ask what is checked at each stage and whether inspection records or sample reports can be supplied for review.
Xinrui supports sample orders, custom packaging, and a custom minimum order quantity of 10 pairs for this product. Packaging may use an OPP bag or a customized format. The company also lists support for custom logos, colors, sizes, shapes, and packaging, which should be confirmed against the final purchase specification.
Listed production lead times are 5 working days for orders below 100 pieces, 7 working days for quantities from 100 to 1,000 pieces, and 15 working days for orders from 1,000 to 5,000 pieces. Confirm these timelines, as well as artwork approval and shipping arrangements, before placing a production order.
| Evaluation Category | Questions for the Supplier | Information Currently Listed |
|---|---|---|
| Materials and safety | What is the exact composition, and which test documents support skin-contact and medical-grade claims? | 95% cotton and 5% silicone; an ISO 10993 certificate is listed for relevant intimate apparel products. |
| Design and fit | Does the sample match the specified shape, size, color, and intended garment applications? | V-shaped full-cup design; 11 cm by 11 cm; nude and black; intended for discreet use with backless dresses. |
| Adhesive and care | How long does the adhesive last, and how does it perform after removal, hand washing, and reuse? | Hand wash only; adhesion, washing, waterproofing, and reuse performance require further verification. |
| Production preparation | What are the packaging choices, customization limits, MOQ, inspection stages, and lead times? | Samples available; custom MOQ of 10 pairs; OPP bag or custom package; OEM/ODM and customization services supported. |
Not by itself. Confirm that the certificate and test evidence apply to the relevant product, materials, and intended skin-contact use. The available company information lists ISO 10993 documentation, but buyers should still request the applicable records for their specific sample.
Review the composition, dimensions, shape, color, comfort, fit, and appearance under the target garments. Test initial adhesion, removal, cleaning, and repeated use according to the hand-wash instructions. Any claims about wear time, waterproofing, or reuse should be supported by written specifications or test results.
Finalize the approved sample, material specification, dimensions, color, logo, packaging, inspection requirements, MOQ, and lead time. Also confirm whether any changes to the shape, size, or packaging will require a new sample or additional approval.
A silicone adhesive bra sample should be approved only after its material composition, safety evidence, fit, adhesive behavior, washing process, and quality records have been reviewed. For buyers working with Xinrui, the listed support for samples, custom packaging, OEM/ODM development, and a 10-pair custom MOQ can simplify early-stage purchasing. The company also lists ISO 10993, ISO 9001, BSCI, RoHS, REACH, and BRC among its certifications and credentials. For technical questions or product support, contact judy@xinruibra.com.
Dongguan Xinrui Underwear Co., Ltd. is a factory-based supplier of women's invisible underwear and intimate apparel, providing product development, mass production, OEM/ODM customization, and packaging customization for overseas brand owners, wholesalers, e-commerce sellers, and distribution buyers. Established in 2007, the company operates a 10,000 sqm factory and produces nipple covers, boob tape, silicone bra pads, invisible bras, and panties. Its listed credentials include ISO 9001 and BSCI, and it has served clients across multiple industries.

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