About this product
These are training fins: a short, wide blade in a full-foot silicone pocket. The short blade is deliberate. A long diving fin does the work for you, moving you down the pool on two lazy kicks. A short blade gives just enough extra purchase that you have to keep the kick going, which is what actually trains the legs.
The main thing they change is your ankles. Most adult swimmers have stiff ankles from years of shoes, and a stiff ankle turns a kick into a brake – the foot pushes water forward instead of back. A short fin loads the ankle at the end of each kick and stretches it a little further every length. After a few weeks of fin sets, the kick without fins is noticeably better.
They also buy speed, and speed is useful for its own sake. At a higher tempo you can work on body roll, on the catch, on underwater dolphin off the wall – all things that fall apart at slow beginner pace. Butterfly in particular is far easier to learn with fins on.
Silicone rather than hard rubber is what makes them wearable. A rubber foot pocket rubs the instep and the back of the heel raw over a long session; soft silicone flexes with the foot. Get the size right – a fin that is loose will slip off mid-kick and one that is tight will cramp your arch within a few lengths.
























Swim Training Fins - Blue - Short-Blade Silicone Flippers