Scubapro/UWATEC Twin Jet Full Foot

Because humans evolved as land-dwellers, we aren't very graceful or mobile in the water. But fortunately we were blessed with the intelligence to copy what works. As a result, it didn't take long for the first divers to figure out that fish have fins for a reason - they are a superb means of underwater propulsion...

There was a time when almost every fin on the market consisted primarily of heavy black rubber molded into nearly identical shapes, which made most of them look and feel basically the same. You simply put the fins on your feet and forgot about them.

But thanks to a wave of innovation, fins have undergone a radical evolution in the past few years. Divers now can pick among an array of designs - conventional paddle fins, innovative split fins and vented fins - that come in a rainbow of colors.

Regardless of the fins that you select, odds are that your new diving footwear will be much lighter and do a far better job of efficiently transferring the kick stroke energy from leg muscles through the fin tips than yesterday's models.

When shopping for fins, the first decision you are confronted with is whether you want full-foot or open-heel fins.

Of these two, the earliest fins were of the full-foot variety used by both free divers and snorkelers. Many divers still prefer these types of fins because they create less drag in the water, efficiently transfer leg energy and don't require the use of booties.

But full-foot fins have limitations and drawbacks. They aren't well suited for cold-water diving. And for some divers, full-foot fins can cause chafing and blisters. Finally, the booties used with open-heel fins can provide added protection for your feet when walking over hot sand or rocky coastlines before and after shore dives.

Deciding what type and design of fin to buy is only part of the equation. Finding a set that fits comfortably is probably the more important factor. When trying fins on, look for a snug fit that doesn't bind your arches or toes. If you can't wiggle your toes, try a larger size.

Many dive stores have pools where you can check out a new set of fins before making a purchase. Another option is testing different types of rental fins on your next dive vacation.

Twin Jet Full Foot

Colors: Black, Blue, or Yellow

Sizes: 5-6, 7-8, 9-10, 11-12, 13-14

Features: Split blade. Hydrofoil shape reduces drag and increases thrust. Blade vents decrease resistance.

Color Code: Black fins are slightly stiffer and negatively buoyant. Blue and yellow are softer and lighter.

Warranty: Lifetime 

MSRP: $159