Carolina's Pipeline Series Boots provide the safety features you need for the most demanding jobs. These Wellington slip-on style boots boast ASTM F2413-05 Electrical Hazard ratings, Composite and Aluminum safety toes, Internal Met guards, and slip resisting outsoles. Carolina's Pipeline boots are built to protect. Also, comfort is guaranteed with features to keep you warm - Thinsulate insulation, dry - Waterproof Scubaliners, and on your feet - a Comfort Footbed system.