The phrase "wrinkle resistance" means that something, like clothing or fabric, has the ability to resist or prevent wrinkles from appearing easily. Full definition
It's made of poly - nylon - cotton for wrinkle resistance and durability, with a water - resistant coating for quick - drying comfort. (territoryahead.com)
Low wrinkle resistance turns it into a perfect lining fabric. (tissura.com)
They wash and dry with the convenience and wrinkle resistance of a cotton blend, but have the feel of high thread count, 100 % Egyptian cotton sheets without the pilling and maintenance issues. (thehealthyhomeeconomist.com)