1. Fabric - Made of high-quality combed cotton fabric, slightly elastic and non-restrictive, soft to the touch, skin-friendly and breathable 2. Lining - cotton lining, close-fitting, zero-allergy and skin-friendly, 2. Version - I-back version suitable for Some children have narrow shoulders and vest-style products cannot fit well. You can choose a bra with appropriate elasticity and appropriate capacity to reduce the trouble of shoulder drop and allow them to move freely. 5. Color - Natural pastel color, fresh and elegant, opaque and easy to match. The wider side ratio prevents running up and effectively protects early-growing girls and relieves embarrassment. 3. Filling - 60G/square meter of non-fluorescent underwear special cotton, fluffy, light and not stuffy, non-detachable, non-displaceable, effectively prevents bumps, 4. Craftsmanship details -The piping and hem use suede elastic bands of different widths, which are ultra-thin, highly elastic and non-restraining, and the suede is skin-friendly and comfortable to wear.