Snorkeling is incredibly fun for kids: the discovery of the underwater world can be magical. Best-case, on a vacation, is to stay at a resort with snorkeling right on-site: beginners can dip in and out; afionados can snorkel whenever they like. Even if a resort supplies snorkel gear, it's preferable to have your own; often, the resort's gear is available for only an hour or two.
Shatter proof polycarbonate lens mask with adjustable head strap; flexible bend at snorkel base.
Another choice, for a snorkel-and-mask Combo Set, designed to be easily used by kids.
Of course, parents need some snorkel gear too. This set has a soft silicone mouthpiece, adjustable clip to attach for securing snorkel to the mask.
Another choice for parents who want to snorkel with their kids: this package includes de-fogger, a type of "Dry Snorkel" designed to close off when you dive, and not only fins but also neoprene fin socks.
Neon-bright; inflatable; adjustable straps. A snorkel vest is not only good for safety, it also makes snorkeling a lot easier: no effort is needed to stay afloat.
Even kids who can swim benefit from water-wings when they're snorkeling: they can float without any effort, while they watch the fishies. These heavy-gauge vinyl waterwings come in size Medium for ages 3 to 7, and there's even a large size, for ages 7 to 11.
Floating fins for swimming or snorkeling: fins are fun to use, and turn any swimmer into a powerhouse in the water.
A mask, fins, and snorkel set, all tucked in a bag.