Xinrui describes its product as a full-cup, V-shaped invisible sticky bra insert measuring 11 × 11 cm. The listing gives the material composition as 95% cotton and 5% silicone, with nude and black color options. OPP bags or custom packaging are available, and samples can be requested.
The product information does not specify an expiry date, shelf life for unopened pads, recommended storage temperature or humidity, or a storage-related warranty. Ask Xinrui to confirm the applicable shelf life and storage conditions for the exact pad and packaging you plan to order before holding inventory.

Hand washing is the stated care method for the product. It concerns care after use and does not establish how long unused pads can be stored. Likewise, the listed packaging options do not guarantee a particular storage period.
Xinrui reports inspections of incoming raw materials, production in progress, and finished goods. Its listed ISO 9001 and ISO 10993 credentials cover product categories that include bra pads, but the provided certification details do not state a shelf-life duration.
Xinrui names wedding gowns and open-back or deep-V reception dresses as potential uses for its invisible intimate apparel. A reported case involving an unnamed U.S. online apparel seller describes repeat purchases of invisible nipple covers; it does not provide storage-life specifications for this V-shaped bra pad.
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