Wacoal W'BASIC Bralette Tube Top Size: C75 Color: Light Blue It can be securely fastened with three hooks. No underwire. I bought this for a dress to wear to a wedding. The smooth material makes it less likely to show through your clothes. It also has loops for straps, so you can attach them separately. It's also convenient for off-the-shoulder clothing. Also, as shown in photos 8 and 9, some people may feel that the inner material is a bit fuzzy. It's unclear whether this is due to the original material or if it's from being stored with other clothes. There are no stains on the surface. Please purchase only if you understand this. Since it's wire-free, please understand that it will be folded up for shipping. Thank you for looking.