The Seac Propulsion S fins were a ScubaLab Best Buy during the 2018 scuba diving fins test. Learn what testers liked about these fins in this video review. See the full ScubaLab fin review here.

I'm Roger Roy, the ScubaLab director. We tested the Seac Propulsion S fin. With a nice balance of performance, comfort and easy kicking, it was our Best Buy for open heel fins.

We tested the Propulsion at Alexander Springs in Central Florida, where test divers rated it in 12 different categories, including efficiency, power, acceleration and comfort. The soft channels running the length of the Propulsion's blade keep it nice and flexy while the stiff side rails allow for good power and acceleration. They let the fin “glide without a ton of effort,” as one tester put it. That being said, the long blade -- a shade over 26 inches in size medium-large -- can take a little time to get up to speed. It was rated very good for all styles of kicking, including surface swims, as well as comfort.

Some testers weren’t able to secure a tight fit with the bungee strap, but those that did noted how much they loved the big, easy-to-grasp finger loop. With all-around power and stability at an affordable price, the Seac Propulsion S is our Best Buy.