These chains are high end custom made jewelry using stainless steel rust free chains + custom engraved carabiner + unique yarn wrapping of the link utilizing scrap yarn / waste yarn from other industrial textile projects.
This Rainbow Chain is size large. It is 30 in long / 76 cm long including the twist carabiner.
The last image is demonstrating the scale of chain on the body, the particular yarn painting of this specific chain is indicated in the first two images.