I got one of shein for like £12 and yes they fit under the buggy. They come with a clear vaccum seal type lid that you can add to the potty insert if they do a pee etc and it keeps it secure until you can empty it. There great for out and about and car journeys etc or visiting people. Shein don’t have mine anymore but Ali express do Just found this amazing item on AliExpress. Check it out! £13.41 | Baby Toilet Cute Portable Travel Baby Potty Car Squatty Potty Child Pot Training Girls Boy Urinal Kid Toilet Seat Children's Pot https://a.aliexpress.com/_EwQ7geX
@Glynis thank you
@Liz thank you
I have the exact same one as this but the dinosaur one and yes it fits under the pushchair and the travel pushchair as well. You don't have to empty it immediately if you can't and it doesn't spill. X
I think this is the one we have - if so yes it fits under the buggy (it fits under our travel buggy too) and also yes you can close it with pee inside.