How to Swim with a Cast: Tips for Protecting Your Cast While Swimming

A cast can put ordinary pleasures on pause. Whether it's laps at the local pool or a paddle at the beach on a warm afternoon, swimming with a waterproof cast cover brings that back into reach for various injuries, though not for all of them. Getting there safely means understanding what a cover can and can't do before you plan a session around it. It depends on your specific cast, where you are in recovery, and what your treating healthcare professional says.

Below, we walk through what a cover protects against, how to check the water is a good idea in the first place, how to get the fit right, and what to do if things don't go to plan.

Can You Swim with a Cast?

Sometimes, yes, though it's never a blanket yes for every injury. The padding inside a cast has a habit of staying damp once water reaches it, and that's precisely the problem a cover is built to solve. A waterproof cast cover forms a seal against water, but no cover can guarantee complete protection in every circumstance, especially if the fit is off or the injury simply isn't ready for time in the water.

If your clinician has told you your cast or wound needs to stay bone dry, that's a critical decision to confirm with them before you consider a cover. The same goes if you've been told to rest the limb or keep it still. That confirmation carries more weight than any product feature, and no cover on the market can stand in for it.

What Does a Waterproof Cast Cover Do?

Picture it as a second skin over the cast: it fits snugly and seals against your skin above the injury, creating a barrier between the cast and whatever water you're swimming in. Getting the size right and positioning that seal carefully are what make the barrier hold. Worth remembering too that a cover is there purely for water protection, not as a brace or support for the limb, so it does nothing to loosen any movement restriction your clinician has already put in place. It's also worth checking how long your particular cover is rated for use at a time, since that varies between products and matters just as much as the fit itself.

Getting Ready Before You Swim

A little groundwork turns swimming with a waterproof cast cover into a routine outing rather than a gamble. Run through this before you get anywhere near the water:

Check with your healthcare professional. Ask whether swimming fits your injury and your stage of recovery, particularly if there's a wound, recent surgery, or any specific restriction involved.

Choose the right cover. Match it to your cast using our size guide, checking both length and location.

Give it a proper once-over. Look for tears, holes, or thin patches, and skip using anything that looks even slightly compromised.

Keep the swim short and easy. Stay inside the product's stated time and steer clear of anything that could strain or knock the injured limb.

Fitting a Waterproof Cast Cover Correctly

Measure both the length and circumference of your cast against the size guide before you buy or use a cover. For our own range, that means allowing roughly 5cm beyond the end of the cast, giving the seal enough room to sit on healthy skin rather than fighting the cast itself.

Once you've settled on the right size, stretch the opening carefully and slide the cover over the cast, positioning the seal on bare skin above it. It should feel snug without pinching off circulation, and it's worth one last check for damage right before you step into the water. Get this part right and swimming with a waterproof cast cover stops being something to worry about mid-session.

Tips for Swimming with an Arm or Leg Cast

Arm Casts

Stick to whatever movements your clinician has cleared. Avoid gripping or pushing off surfaces with the covered hand, and don't force your arm into a stroke that pulls or strains. Our arm covers are built with exactly this kind of everyday movement in mind.

Leg Casts

Take your time entering and leaving the pool, and never walk on a wet leg cover. Our own care instructions are blunt about this for good reason: the covers become slippery once wet, and walking on them risks weakening or puncturing the seal. Use assistance where you need it, respect any weight-bearing restrictions, and keep well clear of rough or uneven ground. Our leg covers are designed with pool use specifically in mind, rather than rougher terrain.

Pool Swimming Versus Swimming at the Beach

In a Pool

A pool tends to mean easier access to changing facilities and steadier, more predictable footing, though wet surrounds still call for a bit of caution. Fitting the cover right at the pool edge, rather than in a change room further away, also cuts down on the distance you need to walk once it's on.

At the Beach

Waves, sand, and rocks throw in variables a pool simply doesn't have, and they leave a leg cover far more exposed to damage. Our leg models suit fitting at the pool edge better than ocean use, where you're far more likely to be crossing a sandy or rocky base that could puncture the cover underfoot. If a beach swim is what you're after, an arm cast carries noticeably less risk in that setting than a leg cast does.

How Long Can You Swim with a Waterproof Cast Cover?

A Dricast cover is designed for 15 to 20 minutes of swimming or hydrotherapy per session, with roughly two hours of drying time between uses to keep condensation from building up inside the cover. That figure is specific to our product rather than a rule that applies across every waterproof cover on the market, so following the instructions for your particular one still matters more than assuming a standard time fits all. The two-hour gap is worth building into your plans if you're hoping to swim most days, rather than treating the cover as something you can wear back-to-back.

Looking After Your Cast and Cover After Swimming

• Leave the water carefully, and don't walk on a leg cover as you exit
• Remove the cover gently once you're clear of the pool or sea
• Check the cast and surrounding skin for any dampness
• Rinse the cover in warm water, especially after pool or sea use
• Let it air dry fully away from direct sunlight or heat
• Store it somewhere cool and dry until next time

Our full care instructions go into more detail if you'd like to keep a copy handy.

If Your Cast Gets Wet

Get in touch with your treating healthcare professional for advice, particularly if the padding feels wet, the skin underneath turns irritated, or you notice an unusual smell or discomfort. Steer clear of using heat to dry the cast yourself. If water finds its way inside the cover mid-swim, stop what you're doing and get advice on the next step rather than pushing on with the session.

Choosing a Dricast Waterproof Cast Cover

Every Dricast cover is designed and made here in New Zealand for exactly this kind of everyday water exposure, whether that's a shower, a bath or a proper swim. We make arm and leg covers across both adult and child sizes, so measuring beats guessing every time. This is particularly true once a child's arm or leg starts approaching adult proportions and child sizing runs out of room. Our child covers follow the same sizing logic as the adult range, just scaled to smaller limbs, so measuring still beats guessing either way, particularly once a child's arm or leg starts approaching adult proportions and the child sizing runs out of room. Make sure the seal sits on healthy skin above the cast rather than against it, follow the fitting, swimming and care instructions that come with your cover, and get in touch if you're ever unsure about fit or suitability before you use it rather than after.

Put simply: a correctly sized cover, fitted properly and used within its recommended time, is what turns swimming with a waterproof cast cover into an ordinary part of recovery rather than a risk you have to weigh up every time. If you're ready to find the right fit, browse our full range of arm and leg covers, or contact us directly if your cast doesn't quite match the usual categories.