Welcome! Yeah, the leather will stretch a bit especially on the lower cushion and backrest. The best thing to do is use a good leather conditioner and cleaner to help prevent creasing. I like to use Meguiar's Gold Class Leather Cleaner/Conditioner Spray as well as Meguiar's Gold Class interior cleaner spray to maintain the finish. It keeps the leather nice and soft and keeps it from having the shiny oily appearance some other cleaners leave behind.