Let's shed a little light on the lighting jargon. IP ratings are a rating of the protection for electronic equipment from dust, solid objects and fluids.
All of our outdoor lights have an IP44 rating which means they are protected from water sprayed in all directions. We achieve this with strong rubber cables and double sealed caps over the bulbs. All indoor use lights are usually rated IP20. We've popped together a comparison table so you can see the difference between ratings.