Reinbows or similar

[Wrapunzel]

I have a tiny rider who wants to be independent on her saintly ancient pony but struggles with finger/grip strength holding the reins so we end up with washing lines.
Her big sister (8) has notched Henry James reins but the little one finds them a bit chunky for her hands.
If I try and search for the reinbow attachments then search engines patronise me and show me rainbow-coloured reins! Any ideas?

https://equijumpltd.com/en-gb/products/rein-bows

Oh you absolute legend! Thank you so so much

Postage is £29 but I think I’ll suck it up as literally been desperate for these

Have you looked at balance support reins.

I have balance support reins but didn’t buy the ones with loops as my eldest didn’t need them (and she had the pony first)! I found some rein bows on eBay for £30 inc postage so really pleased, just needed to put the space in for the search to work