The No-Sew Roman Bars make fabricating Roman Shades fast and easy, especially on hard-to-sew fabrics such as sunscreen material. Make perfectly straight pleats every time. No buckles, pockets or stitches ever! The specially designed clear plastic composite was engineered to withstand harsh temperatures, sunlight and its damaging UV radiation. Cottons, polyesters, even sunscreen fabrics look great with No-Sew Roman Bars.