I like the washable/reuseable nappies.

I have had bad experiences with kids being naked at the beach, the sand sticks to their bits and pieces and when you try to get it off it is like wiping sandpaper over their skin. Even in the bath it doesn't wash off or brushing it off hurts too. Its just easier and more comfortable for them to have some type of swimmers or nappy.

Also watch he doesn't eat any sand as when it comes out the other end ouch!!! seen that happen too.

He will love it. Have fun!!