Training aids do not fix technique. They amplify whatever your stroke already does, including the faults. FINIS Swim makes fins, hand paddles, snorkels and tempo trainers that are genuinely useful once your body position is sound, and genuinely counterproductive before that. If you own one piece of equipment, make it a pair of short fins. If you own two, add a centre-mount snorkel. Paddles come last, and they come with a shoulder warning.
The bag of an adult swimmer who has been swimming for two years usually contains more equipment than the bag of a national squad member. That is the wrong way round.
What FINIS Actually Makes
FINIS is a long-established swim equipment company whose range is aimed at technique work rather than at recreational snorkelling. Their most recognised products among coaches are short training fins, the monofin, the centre-mount snorkel, forearm and hand paddles, and the Tempo Trainer metronome.
The important distinction that the original version of this article blurred: scuba fins and swim fins are different tools. Long, stiff scuba blades are built for pushing a diver and their tank at low cadence. Short, flexible swim fins are built to let a swimmer kick at close to their natural rhythm with a little more purchase. Do not train in scuba fins. They wreck your kick timing and they cramp your calves.
The Kit, Ranked by Usefulness
| Item | What it does well | What it does badly | Buy it when |
|---|---|---|---|
| Short training fins | Body position, ankle flexibility, drill speed | Masks a weak kick if overused | Straight away |
| Centre-mount snorkel | Lets you fix the stroke without breathing interfering | Nothing much, honestly | Early |
| Pull buoy | Isolates the pull, rests the legs | Fakes a good body position | Once your hips ride high unaided |
| Tempo Trainer | Stroke rate control, pacing | Useless before body position is sound | When you can hold a stroke count |
| Hand paddles | Catch feel, pull strength | Loads the shoulder; amplifies a dropped elbow | Last, and sparingly |
| Monofin | Undulation, core, dolphin kick | Highly specialised, easy to misuse | Rarely; for butterfly work |
| Kickboard | Simple kick sets | Extends the neck, aggravates shoulders and low back | Optional; kicking on your side is better |
Fins: The One Aid Worth Buying First
Short fins do three things well. They raise your legs, so you can feel what a horizontal body actually feels like. They force your ankle through a greater range on every kick, which over months genuinely improves ankle flexibility. And they let you complete drills at a speed where the drill still resembles swimming.
Use them for drills, kick sets and short faster efforts. Do not use them for a whole session. If you take the fins off and your hips sink, the fins are doing the work your core should be.
Sizing: snug, not tight. Fins that slip give blisters; fins that squeeze give cramp. Rinse in fresh water and dry out of the sun.
Paddles: The Aid That Injures People
A paddle increases the surface area of your hand, which increases the load on your shoulder on every single stroke. If your catch is good, you feel the water better and build pull strength. If your elbow drops, you drive that fault into the joint several hundred times per session.
Rules I hold swimmers to:
- Start small. A paddle barely larger than your hand is enough. Big paddles are for people whose shoulders have already earned them.
- Loose wrist strap, or none. If the paddle falls off when your hand angle is wrong, the paddle is coaching you.
- Low volume. A few hundred metres in a session, not a few thousand.
- Never with a pull buoy and a band as a matter of routine. That stack is pure shoulder load and no leg work.
- Stop at the first twinge. Swimmer’s shoulder is an overuse injury. It does not respond to pushing through, and it needs a physiotherapist, not another set.
Common Mistakes
- Buying scuba fins for pool training. Wrong blade, wrong cadence, guaranteed calf cramp.
- Living in a pull buoy. It gives you the hips of a good swimmer without you having earned them.
- Big paddles early. The fastest route to a shoulder injury in adult swimming.
- Using a Tempo Trainer to spin the arms faster. Without a stroke count target you simply thrash.
- Kickboard sets with the head up for a kilometre. Neck and low back complain, and the kick you train is not the kick you swim.
- Buying a monofin for general fitness. It is a specialist tool.
- Adding equipment instead of getting the stroke looked at. A coach on the deck for one session beats a bag of gear.
Safety
A centre-mount snorkel makes it easy to swim without lifting the head, which is exactly why some swimmers start experimenting with underwater lengths and breath-holding sets. Do not. Prolonged or repeated breath-holding, particularly after hyperventilating, causes shallow-water blackout: a silent loss of consciousness with no warning and no struggle. It has drowned strong, fit swimmers in lifeguarded pools. Never practise breath-holding without someone watching you specifically, and never make a game of it.
Fins in a crowded public lane are a hazard to the person behind you. Announce them, and swim at the front or the back of the lane.
If your shoulder or knee hurts, take the paddles out of the bag and see a physiotherapist. Equipment does not fix pain.
Children do not need training aids. They need water time. Floating aids of any kind are teaching tools, never safety devices, and a child in the water needs an adult within arm’s reach regardless.
What to Buy, in Order
- Goggles that fit. Nothing matters more, and it costs almost nothing.
- Short training fins.
- A centre-mount snorkel.
- A Tempo Trainer, once your stroke count is stable.
- Small paddles, once a coach has told you your catch is sound.
Most adults stop needing anything else. If you are choosing goggles, we have written about how to test a goggle for fit, and if you are trying to get quicker, the honest levers are in stroke count and tempo rather than in equipment. Swimmers who have never had their catch assessed will gain far more from a handful of private swimming lessons than from a paddle. Structured swimming classes usually supply aids for you to try before you buy.
For pools and public programmes, ActiveSG lists facilities across Singapore.
Frequently Asked Questions
Are FINIS fins better than other brands?
They are well made and widely used by coaches, but fit matters more than brand. A short, flexible fin that fits your foot will serve you better than a famous one that does not.
Can I use scuba fins for swim training?
No. Long stiff blades slow your kick cadence, change your timing, and commonly cause calf cramp. Buy short swim fins.
Do hand paddles make you faster?
They build pull strength and improve feel for the water when your technique is already sound. Used early or in large sizes, they mainly build shoulder injuries.
What is a centre-mount snorkel for?
It removes breathing from the equation so you can concentrate on body position, rotation or catch. It is the most underrated item in the bag.
Should beginners use a pull buoy?
Generally not. It hides the exact problem — sinking hips — that a beginner most needs to solve.
How long does swim gear last?
Fins and paddles last for years if rinsed in fresh water and dried away from direct sun. Silicone perishes in heat, so never leave them in a car.
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