Why Long Blades?
Snorkeling fins differ from swim training fins in length and usage. While most practice fins are short to allow for a race-speed kicking tempo, snorkel and dive fins feature medium to long blades. This extra surface area allows for a slow, leisurely tempo with excellent propulsion. You'll be able to kick longer and explore more.
Open vs. Closed Heel
You'll come across snorkeling fins with all kinds of interesting features. Heel design is an essential component for a comfortable experience. A full foot-pocket is not adjustable, but offers a more secure feeling, whereas an open heel may be adjustable (like the Cressi Palau). But this really comes down to a personal preference.
Rubber vs. Silicone
When it comes to material, fins are typically made from rubber or silicone, though some are made from floating foam. Rubber snorkel fins − like the US Divers Sea Lions − will break in and conform to your foot shape with use, making them a more comfortable option. Silicone fins will retain their original shape year after year and won't break down like a rubber fin.