Scuba Fins

What to look for in scuba diving fins

Frequently asked questions

Can I use scuba diving fins for snorkeling?

Yes — scuba diving fins work fine for snorkeling, though they are heavier and stiffer than fins designed specifically for snorkeling, which can cause more leg fatigue during a long surface session. If you primarily snorkel but occasionally scuba dive, a mid-stiffness open-heel scuba fin is a practical choice that covers both activities. If you mostly snorkel, a lighter snorkeling fin will be more comfortable. Snorkeling fins are generally not recommended for scuba diving as they lack the blade power needed to move a diver carrying a full kit.

What size fins do I need?

Full-foot fins are sized like shoes — use your regular shoe size. Open-heel fins are sized to fit over a neoprene boot, so the boot thickness matters. If you dive in 3mm boots, you will typically need a fin one size larger than your shoe size; in 5mm or 7mm boots, go up two sizes. When in doubt, size up rather than down — a fin that is slightly large with a properly adjusted strap is more comfortable than one that is too tight. If you are local to Edmonton, come in and try them on with your boots.

What is the difference between a spring strap and a standard buckle strap?

A standard quick-release buckle strap is adjustable — you set the length for your boot and buckle it closed each time. A spring strap uses the tension of a coiled spring to hold the strap against your heel — there is no buckle to close, so you simply step in and the strap snaps into place, and step out by pulling the tab. Spring straps are significantly faster to put on and remove, which matters when doing repeated boat dives or getting out of the water quickly. They are not adjustable, so sizing needs to be right. We carry replacement spring straps for many popular fin models in our fin parts section.

How do I prevent leg cramps while diving with fins?

Cramps during a dive are most often caused by fins that are too stiff for your current fitness level, kicking with a pointed toe rather than a flexed foot, or dehydration. Start with a moderate-stiffness fin if you are a newer diver and build up to stiffer blades as your leg strength develops. Focus on kicking from the hip with a relaxed ankle rather than from the knee. Stay well hydrated before your dive — even mild dehydration significantly increases cramp risk. If cramps do strike underwater, stop kicking, grab the tip of the fin blade, and pull it toward you to stretch the calf muscle.

Can I replace the strap on my fins?

Yes — fin straps and buckles are the most commonly replaced part on open-heel fins, and we carry replacements for most popular models. Check our fin parts section, or email us a photo of your fin and the broken strap and we will identify the right replacement. Many divers also take the opportunity to upgrade from a standard buckle strap to a spring strap at the same time, which is a worthwhile improvement in convenience.