Why Use Gtechniq L1 Leather Guard? L1 Leather Guard forms a durable abrasion resistant matte finish which offers the best ever protection against abrasion damage, UV rays, dye transfer and other discolouration. With added BioCote® antimicrobial technology, treated surfaces will kill 99.9% of bacteria. Friction protection is particularly important on seat bolsters, seat piping and any other high wear areas. The anti stain function is most relevant for light coloured leathers which are typically stained by dark coloured fabrics such as indigo jeans. L1 gives 3 to 12 months durability depending on how high-wear the area protected is. Quick Overview: Abrasion resistant Anti bacterial Prevents dye transfer