Fins

Introduction

How to recognize a good fin

Care and cleaning

Introduction

The purpose of fins is to propel the diver underwater with as little effort as possible, thus simplifying movement. Fins are made of two very different elements: the propulsion blades and the foot pocket.

There are three main models: the closed sock covering the heel, open heeled socks which allow for a better adjustment of the foot and the high socks that are fastened at the ankle and which are used together with a neoprene boot. These boots isolate the feet from the cold and allow for the fins to be comfortably adjusted. There are boots with or without soles and with or without zippers.

Cómo reconocer una buena aleta

The best fins are those with considerable firmness along the transversal nerves which act as the vertical stabilizers. It is also important to consider the width and length of the blade, given that the movement or rather, the thrust achieved in the water depends on this, the channels for scooping water and thrusting it out the back and any vents that reduce movement resistance.
It is advisable to choose fins that adjust easily to the foot and which do not have rough or hard spots that can lead to chafing that would affect foot movements.

Care and cleaning: In order to keep fins in good condition it is recommended that they be:

1. Washed with plenty of sweet water after each dive.
2. Kept in fresh, dry places, out of sunlight.
3. With open heeled fins it is advisable to check on the fin straps, as this is more fragile and prone to deterioration.
4. If stored in a standing position, against a wall, it is best to keep the blade at the top so as to avoid deformation.
5. If they are not to be used for a considerable period of time, it is best to store them with a little talcum powder.