T.C.
If you find anything that he is willing to wear get them!!! Then just buy the puffy fabric paint and make squigglies on the bottom of the slippers to help with slippery floors! It is also a fun thing to do with the little ones if you want to make it into a craft for you both to enjoy! My 3 year old loves making this for the last 2 years!
Good luck and blessings to you and yours!