The seamless brassiere has wire free support, which means its comfortable to wear, and doesn't have awkward pads or wires. The push-up style gives you a seamless lift while still being soft and comfortable. It is very light in weight, the material is 100% nylon spandex polyester so there are no worries about it stretching out of shape over time. This material is also breathable so your body temperature stays regulated no matter what. The straps are non adjustable so they wouldn't fall off of your shoulders after bending over or reaching up high.