Seamless Full Fit sizes feature Medela's exclusive SideLift panel for added support and cushioned straps for extra comfort. Medela's seamless bra provides a smooth, natural line under everyday tee shirts or an elegant blouse. The molded stretch cup made of a cotton/lycra blend features a delicate lacy pattern woven right into the fabric. It is this unique fabric that is key to how the bra comfortably accommodates fluctuating breast size, while maintaining cool comfort and flexibility.