A book stand that won't fall over even with just one book A4 Medium

For small spaces on your desk, on a side table, or on a night table.

For color boxes and bookshelves.
You can combine them to suit your space.
It is also possible to connect different sizes together .

When you insert a book or something from the front, the stopper rises.
Stoppers on both sides hold the inserted items in place so they won't fall over.
If you remove only one of the books, the stopper for that book will go down.
The design makes it difficult for adjacent books to fall over, and it's easy to see where to put them back!

The back side has anti-slip rubber feet.