There is a Turbosmooth modifier on the sofa and plaid (0 iteration in the viewport, 1 iteration on the render). In OBJ, the stack is collapsed.
A sofa with a blanket and a book in the group.

Sofa Size 1450x920x840 with Turbosmooth Modifier
Sofa-(Polys 13952), plaid and book-(Polys 6440) without Turbosmooth modifier, shown on the grid.

There are 5 skin colors in the file, but the colors of the sofa can be easily changed to any one through Color.

https://www.divan.ru/irkutsk/product/divan-kusken-velvet-sand