Grimco banners are new and improved, sewn and grommeted for double strength against tearing. Available in 10 oz and 14 oz materials. Ready for your vinyl lettering. 10 oz material is a 3 ply banner material and made for single sided banners. 14 oz material is a semi gloss banner material for single sided banners. It is recommended to wipe down banners with alcohol before applying vinyl graphics.