Rev Motoring Heavy Duty All Weather Floor Mats for Audi A4 S4 RS4 B8 B8.5 09-16 (Set of 4) Heavy duty thick rubber mats sold in sets of 4 front and rear. Compatible with factory Audi retention system, these snap right in. Thick grooves trap water sand mud and snow and protect your carpet. Built with thick dense rubber to outlast any other mat on the market. Twice as thick as the oem mats from Audi. Compatible with Audi 2009-2015 A4 S4 and RS4 models. Will not fit convertibles!