https://www.primark.com/en-gb/p/2pk-square-frame-sunglasses-multi-991125983935 Weren’t these colours but like this
I just bought my 2 year old a pair on amazon, they have a strap which is adjustable and they stay on!
I think a tight strap would be best.
Bless her 😆 one with a strap probably Mine looses his it’s a nightmare but he loves them so generally looks after them H&M
Boots were good and you can buy a strap to use with them :)
I got a 2pk in pink and purple from primark and they actually stay on. I’ll try to find them.