The pages are made out of a synthetic material that makes them waterproof, tear resistant, and stain resistant with normal use. It is a very durable book that dries out quickly if it does get wet. The pages don't bleed through when words are highlighted (with a dry highlighter as recommended).
We enjoyed testing out how waterproof the Bible was by putting it in the shower. The water beaded right off! I don't think that I will ever read the Bible in the shower, but maybe in the bath :) I think this and the other products offered by this publisher would be great for anyone who love the outdoors and being able to read God's word in His creation.