^the natives of that island are called "taga Negros" (from Negros) or Negrense.
The "neg" is pronounced like "egg". We use the Spanish pronunciation, not the English one.
Also, in Spanish (esp in Latin American countries), the word "negro" isn't racist. It's just the term for the color black, also for a black person/ person with African features. This was said to me by a Colombian friend. If one is brown skinned, then they're called a moreno/morena. If black-skinned, then a negro. (Spanish pronunciation & context, mind). Those who are mixed with white Europeans are called mestizo/ mestiza. The Brazilians (Brazilian Portuguese) have another term for mixed/ mestizo, which is "pardo".
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As for life jackets, I don't know for Bantayan island but most of the life vests that I've seen in PH are "normal" sized. I've seen some gringos wear them on boats (bcos it was required) but they couldn't close the vests bcos of large built and/ or bellies.