I did so much research into getting my boys onto the front of my 29" mountain bike and it paid off with handfuls of really great, super memorable trips. But my smallest is now coming out of winter weighing in at 17Kg so the season for small boy MTB'ing are over for now.

For sale is a really great condition Yepp Mini. Silver.
Everything works just great. Has probably been used 30-40 times.
It comes with original instructions, keys, adapter and tool and odd bits.
And a Thule Yepp Mini Ahead Adapter 12020402 for it to go onto lower stack height stems like my MTB as per photos.
Front handle has been nibbled a bit - before I realised what was going on! This is the only significant wear and tear. As per photo.
Bought spring/summer 2020.

The label on the side says:
Prod date: 01-2018
Art Code 020105

It's easy to fit onto a regular town bike.
It is tricky to fit it onto anything else. It only just fits my Large size Vitus 29" hardtail. The issue is the Yepp's footrest stems are about 2mm from the tops of my suspension posts. It works - but only just. So I wouldn't recommend this for any smaller bike (or raise the stem/bars of your bike to fit).
I added a little chest strap, aka a backpack chest strap, as this helped keep the shoulder straps on.

Seat is for 1-3 years. Max 15Kg

If you're not sold (or your in-laws are terrified of this idea) then read or share this:

https://enduro-mtb.com/en/best-mountain-bike-child-seat-review/

If you are interested in buying the MTB also then do ask. It's in good condition.

I'll keep the adapter on my MTB just in case anyone wants a demo. So give me +24hrs before I can send to get it off!

Postage to Sweden / EU for stardard Postnord rates.
Pick up welcome in Hägersten.