I took a gamble and bought 3 of these, and I am so glad I did! They are so lightweight that I can wear them under a dress or shirt, even in the recent PNW heatwave and while renovating the house. I still wear a light bralette underneath, but these are the BEST for providing underarm coverage! I like loose-fitting dresses, but the deep armscye leaves my delicate skin vulnerable to friction rashes (like thigh rub for your arms!). These lovely little crop tops sit snug under my arms. They cover my bra when I’m wearing a deep-sided sleeveless dress, and protect my skin even when I’m wearing a top with sleeves. Three tops is plenty for wear-wash rotation, but even so I wouldn’t mind having more!