It says big and tall but the size seems much closer to "regular" size. It's comfortable though and easy to put together. Assembly could be done alone but it's much easier with help putting on the back of the chair.
I'm big 6'2" and 290 pounds but this is a very comfortable chair for me. It is a large chair that takes up a lot of space in a home office. The chair was on sale and the store didn't have any in stock but it was delivered to my home 2 days later via UPS at no additional charge. It was easy to put together. An allen wrench was included and no addtional tools were required. The finish work on the chair is good. I'm working on a project so the chair has gotten a lot of use the first week. So far so good. It is too early to tell how well it will hold up but it seems pretty solid.