Boats provide everything. One item is still worth packing, and it is not the fins.
Every day boat in Hurghada carries masks, snorkels, fins and life jackets, included in the price. For most people that is entirely sufficient and there is no reason to fill a suitcase.

The exception is the mask. A borrowed mask that does not fit your face leaks continuously, and a leaking mask ruins snorkelling more thoroughly than cold water or crowds. Test the fit before you buy: hold it to your face without the strap and breathe in through your nose. If it stays put on its own, it fits you.
Fins are bulky, heavy and identical to what is on board — leave them. A rash vest, on the other hand, is worth more than any equipment: it stops the sunburn across your back and shoulders that catches almost every first-time snorkeller, and it works when sunscreen has washed off.


A borrowed mask that does not fit your face leaks continuously, and a leaking mask ruins snorkelling more thoroughly than cold water or crowds.
If you wear glasses, prescription masks exist and are inexpensive. Contact lenses work too, but close your eyes if you have to clear the mask, because a flooded mask is how lenses get lost.

