Cirque Chair
https://www.gebruederthonetvienna.com/en/products/cirque/ 

https://www.stels.ru/catalog/cirque-stul-barnyy.html? 

A light and playful circus theme is at the heart of the Cirque family of stools designed by Martino Gamper for Wiener GTV Design. The brand’s signature curved element is unexpectedly inserted into the base of the stool, creating a seat outline in the form of a chain made up of two or three wooden rings that encircle the entire length of the stool’s legs. This striking style is seamlessly combined with the functionality of the seat, which is available in two heights: the tall, graceful stool with or without backrest, Cirque L and Cirque M, and the stable and proportionate low stool Cirque S.