1, depending on the version: the waist-closing type is mostly elastic fabric, which is not easy to relax and not slip shoulders, and is not suitable for people with big stomachs and thick waistlines to wear outside; The straight tube type is relatively loose, so pay attention to the cuff size when buying. It's easy to run out if it's too big, especially women's vests, which need to be wrapped inside.

2, depending on the occasion: daily wear is mainly comfortable and breathable, you can choose cotton products; If you sweat a lot, it is recommended to choose products with good elasticity and quick drying, such as polyester fabric with high comfort.

3, look at the feel: a good vest should be soft and comfortable, but if there is a wet, sticky product, it is likely that the fabric has added a softener, and the comfort will be reduced or even stiff after wearing it for several times, which may easily cause harmful substances to exceed the standard.