In reply to no feet:
a wee whilie since i was using similar baby equipment but my research would have meant looking for a really good elasticated/drawstring fit to stop the wind getting up inside, head cover area would either be big enough/or expand if you are using an add-on or built in canopy, if its just to cover the wee ones head (presumimg they're wearing hood/hat) then again really good fit (like you would expect for your own hood) and a peak or some other facial protection. back then i was using 'bushbaby' gear but by now there must be so many more available, have you looked at the sportsdirect site and fieldandtrek site. you can also get fleece lined breathable waterproof all in one suits. good luck, have fun!