My little boy is 8 months and just started standing and walking around furniture. Usually he just has socks on and we don't worry with shoes etc. However, DH is keen to get DS some shoes, and the CM would like something on his feet or permission to sellotape his socks on 
We have been to John Lewis and Clarks today, he's measured at a 3.5 but he has "wide arches" and is measuring over a H. They tried four lots of pairs of 3.5H and they don't stay on / fit properly.
Is there anywhere I can buy wider fitting shoes? Or, can anybody recommend something to wear on his feet rather than just socks, that wont interfere with his trying to walk?
Thanks!