Frontlit flex banner is used when you have lights pointing in the front of the banner . It is white opaque substrate with 340 gsm thickness. It has soft and delicate surface. These banners come in both gloss and matt finish. They can be used outdoor and indoor with ease as they are weather resistant.
What is backlit flex
Backlit flex banner is used when you have lights pointing in the back of the banner . It is white opaque substrate with 510 gsm thickness. These banners have high transmittance. They are specially coated for digital printing. They can be used outdoor and indoor with ease as they are weather resistant and water proof. More clear and visible image with back-light due to lower translucency. Its compatible with most solvent printers.
Difference in designing
There is not much of difference in designing between frontlit and backlit flex. It is always advisable to hire a good graphic design agency. For backlit flex care should be taken to use right mix of colors which compliments, so that print quality is best as light is at back. You can get banner designed in adobe illustrator, corel draw, pdf, adobe photoshop. If you are not comfortable with these software then you are recommended to hire graphic designers.