1. Look at the label: The label of a qualified swimsuit should include at least 8 pieces of information: product name, product grade, fiber content, executive standard, washing and maintenance label, safety technology category, manufacturer name and address. In addition to checking if the label information is complete, attention should also be paid to whether there is information such as shelf life, execution standard number, and production license number.

2 fabric options: The swimwear fabric on the market is mainly interwoven with "nylon/polyester+spandex". Good swimsuit fabrics are generally high elastic and have good resilience, which makes them comfortable to wear close to the body and won't feel tight. At the same time, the breathability of the fabric is also good, making it more comfortable to swim.

3. Size: Under the same size, the swimsuit will be tighter than normal clothes. Therefore, considering comfort and fit, the chosen swimsuit size should be slightly one size larger than the normal clothes being worn. It's best to try it on, the one that fits best.

4. Check the process details: Firstly, it is necessary to check the sewing process to see if the stitching is firm and straight. It is best to choose a swimsuit with a wider stitch (the width of the edge with the line at the fabric stitching), which is generally around 3mm; Secondly, for swimsuits equipped with buckles, straps, lanyards, etc., it is necessary to check the firmness of the details to avoid awkward situations such as falling off in the water and accidentally walking out.