Questions about Step by Step chest strap

No, the article is intended for SBS school bags and not for other brands.

Hello I'm sorry, I don't know. (Is so to thread over a kind of 'tube'). Kind regards

16-30cm depending on how far extended. (Incl. clip)

We have clarified this with our supplier. Unfortunately, we cannot help here, as he does not have this information available.

This product is to relieve the shoulders, easy to attach via the rail system, quick and easy to open flap closure, spare part for Step by Step backpacks. And is compatible with Step By Step backpacks.

the clip cannot be clipped on like this, you retract it from above or below and pull it to the appropriate height. it is recommended to have a look at this clip, because there is a like and a right part.