Rams Bro 3-in-1 Ab Roller Wheel Abdominal Exercise Equipment Pro Abdominal Workout & Core Fitness Trainer with Anti-Slip Handles Knee Pad and Pull Rope - Get 6 Pack Abs

At first I thought i had got a knock-off as it came in a box of a different product. The grips aren't all that comfortable. The knee pad that it comes with is super small and thin, it feels like you can only get one knee on it. Rolling it on carpet is super difficult. You'll need to use a flat surface. Even then the roller doesn't have a great range of motion.