Motionwear Women's Convertible Strap Bra S BEIGE Tactel / Spandex Convertible Design - You can use the bra as-is, or if you want some more comfort with your bra, you can remove the back of it entirely and just allow the shoulder straps to offer support. Adjustable Straps - Women are not locked into a set size here with this bra; the adjustable straps mean that you can adjust your bra until you find the best fit. UnderWears Fabric - This is a proprietary fabric that Motionwear uses, in order to create a comfortable, durable, flexible piece of fabric that acts great as a bra for active women. Tactel Spandex - You'll never have to worry about this bra losing its shape or firmness thanks to this dense, thick spandex which will hold up for years of wear and tear. Lightweight - The bra overall is a very minimalist piece. Although it does offer full coverage, it's very light, so it's comfortable to wear and stays in place while you move.