SIMPLE GLOBAL PURCHASE INQUIRY
Choose your product and send your inquiry directly.
One pack contains 5 individually wrapped pieces. You only need your name, email and destination country now. No payment is taken and no full delivery address is required until you decide to buy.
Confirm details → PayPal · US$49.8Confirm details → PayPal · US$29.8
PayPal collects the delivery address and supports the payment methods available for the buyer's device and location. After payment, Yishuangjia confirms men's or women's style and size before dispatch. Buyers with remote, island or special-address delivery, or anyone unsure about standard-shipping coverage, should send the no-charge inquiry before paying.
VERIFY MATERIALS BEFORE YOU INQUIRE
Six published CTI reports cover the listed parts of the tested men's and women's samples.
Current-product production-consistency declaration: Xiamen Xiangying Technology Co., Ltd., Yishuangjia and founder Lin Xiangnan declare that current men's and women's products follow the same material-selection and production-quality standards as the tested samples, and that their main fabric, sewing thread and overlock thread use all-cotton materials. Products purchased by customers are produced to this common standard.
This is a manufacturer and brand declaration, not CTI testing of every item or every production batch. A change in material, supplier, process or style requires renewed verification and an updated disclosure.
These results support transparent comparison for buyers who care about everyday skin-contact comfort and material disclosure. They do not prove the elastic core, other styles or batches, fluorescence, antibacterial or sterile properties, or medical effects.