What makes a Shopify product page feel trustworthy enough to buy

On a Shopify store, I have seen pretty product pages still fail because they do not answer the buyer's basic doubt. People want to know what size to choose, when it ships, what happens if it does not fit, and whether the photos are close to real life. I stopped treating the product page like a brochure. I put the uncomfortable details closer to the top: delivery time, material, sizing, returns…