This obi, obi-shime and obi-age combination is better than the set of previous photo.
Obi: silk belt (normally very tall/thick)
Obi-shime: holding obi itself (silk)
Obi-age: holding the back of obi (silk)

note: When we call Kimono, it must be 100% silk, otherwise
we put prefix "wool-" or "synthetic-" to the word "kimono".