The bottom does feel like plastic, but the chassis as a whole is a lot more rigid than what I'm hearing about the regular Galaxy Pro. There is no give while typing or with the palm rest. Additionally, i can hold the laptop with my index finger under the touchpad and there is no flex. This laptop is almost a lb heavier than the regular Pro, and I think they put that into reinforcing the chassis. Since it's a all-in-one, it looks like Samsung put more effort into ensuring the 360's chassis is higher quality.