Please could you let me know what treat bags or pouches you have found good for small treats for using in training classes?

Tommy just started classes again , hopefully no more ....

My fish4 dogs treat bag has died

the tie to close the bag came out and I can't resurrect it! I don't really want to order another one as I don't like the treats that come with them anyway.

I like a bag with some sort of closure - there seem to be some around with velcro "lids"? Are these any good?

Also a good strong clip to attach it to me - I like that about the fish4dogs one. Rather than just a hook which are usually thin plastic and don't last.

Any recommendations gratefully received - thank you