Due to the thinner profile, you're more able to target muscles and relieve knots in tight spots and hard to reach areas for a more effective workout. No other device targets knots better.
The roller which is made from stainless steel is firm, yet very comfortable due to the smooth surface and precision ball bearings. Unlike many foam rollers with pointy protrusions, the hard smooth surface provides the perfect balance between effectiveness and comfort.
There's no secret that this is one solid unit. It's designed to last. I know how frustrating it is when something you rely on breaks. That's why I've over engineered my roller to last a lifetime.
The non-slip underside has been designed to grip any surface you'd want to workout on. Whether it be hardwood floors, vinyl, tile, carpet, concrete, sand, gravel or grass - it'll stay exactly where you place it so you can focus on getting a good session in.