La Poste or Taxi or Ski shop ?
background:
We will be in Belle Plagne until 29th Dec

Then we have to return to UK

Then we will be in Sainte Foy 13th->20th Jan

Finally we will return to Belle Plagne on 20th by taxi



I will not have a car when I arrive in Sainte Foy, so I want to send my skis on 29th Dec.
I do not know if there is a weight or size limit for La Poste, or what sort of packing I need?