Regency is a lightweight, eight gauge, tone-on-tone striped pattern made with Microbiotic KV-33, a chemical inherent in the vinyl, which retards the growth of bacteria, mildew and fungus for the life of the shower curtain. Safe Guard is a heavy weight (coated) IFR polyester with patented inert chemicals to provide anti-bacterial, anti- microbial and anti-static properties for the life of the product. Both patterns are made with durable #2 grommets and to help ensure against the build up of bacteria are manufactured with no side or bottom hems.