The watermelon is rubbish, guys. It's a shame for the money I spent. The top valve gets clogged and you suffocate without air. The position in the mask and the height are not satisfactory. I have bought a much better one for 15 euros, though without valves.

Very comfortable and restful, the only downside is that it requires a lot of attention compared to a simple snorkel because it got dirt inside and the valve got blocked, so it is always open and does not close during the dive