This was my second tub that I ordered at Wayfair. The first one was sent back because it had an extremely unstable design where the rim of the tub stuck out much farther than the base. I returned it and ordered this one and I have to say its an extremely stable design. From the outside it doesnt look like it has much of a slope in terms of relaxing back, but once you get in the slope of the interior is much different than that of the exterior. I havent installed it yet, but my plumber will do so and after its all finished Ill try to do a follow-up. But so far Im very pleased with this tub. Seems very well-constructed and solid in my opinion.