Swim Fins for Snorkeling - MS31 | Customizable

Technical Specifications of Our Snorkeling Fins - MS31 | Customizable

Donatif ’s MS31 fins are constructed with a one-piece natural rubber body, chosen for its combination of elasticity, durability, and ability to quickly return to its original shape after flexing. The rubber has a hardness rating of 58, a characteristic that allows the blade to maintain consistent responsiveness throughout the various phases of the kick. The approximate weight is 2.5 kg per pair: a design focused on stability and thrust control, particularly suited for those who already have experience using structured fins. The surface of the blade also features a hydrodynamic textured pattern that guides the flow of water during movement.

A key element of the design is the 2.2 cm elastic strap made of 304 stainless steel, paired with a buckle crafted from the same material. This system keeps the foot properly positioned in the foot pocket and minimizes the risk of the strap coming loose unintentionally during use. The strap features three adjustment holes, allowing it to be adapted to sizes L, XL, and XXL. The section that wraps around the heel is molded from natural rubber and follows an ergonomic profile, distributing contact over a wider surface area and reducing localized friction during extended sessions.

The blade of the MS31 natural rubber fins combines elasticity with geometries designed to manage water flow. The channeling holes allow water to flow through specific areas of the blade during the fin stroke, helping to control drag during the various phases of the movement. Solutions of this type are used in ventilated-blade fins to reduce drag during the recovery phase and make more effective use of the fin’s surface area during the propulsive phase. The channels on the underside, meanwhile, promote drainage, preventing water from pooling unnecessarily in the foot pocket area.

Note: All product features are customizable, including color, size, and configuration, to best suit specific needs.

How and Where to Use Our MS31 Customizable Swimming and Snorkeling Fins

The MS31 are fins for swimming, snorkeling, and underwater activities designed primarily for users who are already familiar with finning techniques. The rubber construction, wide blade, and water channeling system are ideal for those seeking a responsive feel to leg movement and precise control of the fin. They can be used for activities at sea, advanced snorkeling sessions, and diving environments compatible with this type of equipment. The blade’s profile helps direct water flow during movement, while the rubber’s elastic recovery allows the structure to quickly return to its original shape after each stroke.

Before entering the water, it is advisable to carefully check the strap adjustment. The three holes allow you to adjust the attachment point according to your size and desired fit. The ergonomic rear section should wrap evenly around the heel without creating any abnormal pressure points. Special attention should be paid to the screws in the connection system: they must be tightened at least flush with the surface of the nut so that the locking system can function properly. This check is recommended before use, especially after adjustments, disassembly, or work on the strap.

The 304 stainless steel buckle is designed to make putting on and taking off the strap easy, while keeping the connection secure during activity. The elastic strap conforms to the heel without requiring constant adjustments during the session, and the rubber padding makes contact with the back of the foot more comfortable. After use, particularly in saltwater, standard equipment care involves rinsing with fresh water and allowing the gear to dry completely before storage. It’s also helpful to periodically inspect the buckles, screws, straps, and rubber surface to identify any signs of wear before your next session.

Why Choose Our MS31 Snorkeling Fins | Customizable

The distinctive feature of the Donatif MS31 fins is the combination of a one-piece natural rubber construction and a closure system with 304 stainless steel components. The blade does not use a rigid, non-flexible construction: instead, the material’s natural elasticity allows the surface to deform during movement and quickly return to its original shape. This characteristic results in a progressive response during the fin stroke. The hydrodynamic lines, channeling holes, and lower channels work to manage water flow, with the goal of making the transition between the propulsive phase and leg recovery smoother.

The fit has also been designed with stability in mind. The elastic strap with a stainless steel buckle keeps the heel securely wrapped and allows for adjustment across three different positions. The natural rubber rear section distributes pressure and makes the closure more comfortable, preventing the metal from resting directly on the heel. This is a practical design for those who use fins frequently and want a fastening system that’s easy to control. The 304 stainless steel used for the strap and buckle completes a construction designed for use in aquatic environments and for regular use of the equipment.

The MS31 also offers the option to customize the logo via digital printing. The print is designed to resist peeling and fading—a feature that’s useful for more than just aesthetic reasons. In fact, customization makes it easier to identify equipment belonging to a school, a dive center, a sports club, or a professional operation. For facilities that manage multiple pairs of fins, having a recognizable product also helps keep technical gear organized and creates greater visual uniformity in the equipment provided to users.

Weighing 2.5 kg per pair, available in sizes L, XL, and XXL, and featuring a blade design optimized for responsiveness, these fins are particularly suited for experienced divers and users who prefer a sturdy construction over particularly lightweight and flexible models. The combination of 58-durometer natural rubber, an ergonomic heel cup, three-position adjustment, and stainless steel components defines a technical product without any superfluous elements. Customization completes the package for those seeking snorkeling and diving fins that can be tailored to their needs, featuring clearly defined functional characteristics and a construction designed to facilitate a stable and controlled fin stroke.