It's a very simple bralette. I love the super thin straps and the coverage cut. It makes it very versatile for wearing with a lot of different items. This is a perfect layer and, if you have smaller cup sizes, will provide support. If you are a Ccup or larger it may not provide the support you need.
I don't like to wear bras so I love a very snug crop or bralette like this just for an extra layer. The fabric is very comfortable and elastic, and will form fit. In a size US S/ 32C and this fits perfectly. I could see it stretching a lot but I don't see it fitting a size large. It is some blend of fabric but not cotton. I hand wash and hang dry like all my bras. I got the burnt orange color. I may grab a couple more because they're supportive enough for me without cutting off my circulation... 😂