Do you have any idea where I can buy swim diapers in Makati?

If your baby is using cloth diapers, you can use the shell, just remove insert. Voila! Instant swim diapers. Swim diapers and cloth diapers are just the same, the only difference is the inner lining (fabric).

I recently got Charlie Banana and Baby Leaf swim diapers from cudsly.com :) Pretty happy with both brands.