3 Layer Water Resistant Full Coverage Car Cover for Mercedes Benz SLK 350 Waterproof, but breathable to allow inside moisture to dry to prevent mold and mildew. Elasticized bottom hem for a quick and snug fit with non-scratch security grommets that allow you to tie down cover or lock it in place (lock not included) Complimentary 4-way buckle-straps system, antenna reinforcement patch, & storage bag included with purchase Our car covers come with a lifetime warranty on workmanship, defects, and fit.