A purse you can swim with is really a roll-top dry bag or IPX8-rated fanny pack designed for full immersion — not a fashion purse with a water-resistant zipper.
Most people picture a regular waterproof handbag when they search for a waterproof purse for swimming, and every single one of those fails underwater. The issue is simple: water-resistant zippers and coated fabrics keep out rain and splashes, but they flood when submerged. The products that actually work for swimming are dry bags and sealed fanny packs built to stay airtight at depth, and the right choice depends on what you’re carrying.
What Makes a Bag Really Waterproof for Swimming
For a bag to survive being submerged while you swim — not just sit on a pool deck — it needs an IPX8 or equivalent continuous-immersion rating. That means it has been tested to stay watertight deeper than 1 meter for an extended period. The sealing mechanism matters more than the fabric: roll-top closures and IPX8-rated seals keep water out; standard zippers, even “water-resistant” ones, let water in under pressure.
Is a Regular Waterproof Purse OK for Swimming?
No, and the distinction trips up a lot of shoppers. A “waterproof” purse you buy at a department store is typically rainproof and splashproof — fine for the beach, not for swimming. Once the bag goes underwater, the seal has to hold pressure, and standard zippers or magnetic snaps will leak immediately. The wallet-style “waterproof phone pouches” sold for boating use a fold-and-clip seal that might work for a quick splash, but aren’t rated for continuous swimming.
The Only Purse-Style Option That Works: Swim Secure Multi-Use Bag
The closest thing to a “waterproof purse for swimming” is the Swim Secure Multi-Use Waterproof Bag, which is a fanny pack sized for a 5.5-inch smartphone, credit cards, and keys. It carries an IPX8 rating, meaning it’s tested for full immersion. Users wear it around the waist or crossbody and swim normally — the seal holds at depth.
Two minutes into the YouTube demo, the tester submerges the bag fully with a phone inside and pulls it out bone-dry. The key step many skip: you must seat the sealing track completely before closing. A half-click leaves a gap.
Where to Buy a Swim-Ready Bag
If you’re set on a bag you can actually swim with, our tested best waterproof beach purse recommendations cover both poolside and swim-capable options so you don’t guess wrong.
Table: Swim-Ready Bags vs. Beach-Only Bags
| Bag Type | Waterproof Rating | Safe for Submersion? | Best Use |
|---|---|---|---|
| Swim Secure Multi-Use Fanny Pack | IPX8 | Yes | Swimming with phone, keys, cards |
| SealLine Dry Sack (roll-top, 10L–45L) | IPX8 equivalent | Yes | Open-water swimming gear, clothes |
| Swim Secure Wild Swim Bag (inflatable) | IPX8 equivalent | Yes | Large loads, buoyancy aid, cold water |
| Speedo Teamster 2.0 (mesh) | None (mesh) | No | Carrying wet gear to/from pool |
| Standard “waterproof” handbag (zipper) | IPX4–IPX6 (splash) | No | Beach, rain, boat deck |
| WILD MOOSE Caribou 45L roll-top | Fully waterproof | Yes | Tough open-water swims, gear transport |
| Body Glove dry bag (small roll-top) | IPX8 equivalent | Yes | Day-use swimming, phone protection |
How to Use a Dry Bag for Swimming Safely
Swimming with a dry bag or sealed fanny pack requires more than just stuffing your things in. A bathtub test before the first real swim costs nothing and saves a soaked phone.
- Roll three to four times: for a roll-top bag, fold the opening down at least three full turns before clipping the buckle. Fewer rolls leaves an air channel.
- Test the seal in a bathtub: put paper towels inside, close the bag fully, submerge it for 30 seconds, and squeeze it. If the towels stay dry, the seal is good.
- Don’t overfill: Swim Secure’s bag fits phones up to 5.5 inches. A larger phone or a bulky keychain can prevent the track from closing flush.
- Wear it snug: a fanny pack that bounces against your body at a fast stroke can work the seal loose over time. Tighten the strap before entering the water.
Table: Common Mistakes and the Fix
| Mistake | Why It Fails | The Fix |
|---|---|---|
| Using a mesh swim bag in the water | Mesh drains water; it’s designed for wet gear, not submersion | Switch to a dry bag or IPX8 fanny pack |
| Trusting a “water-resistant” zipper | Zippers leak under continuous water pressure | Only roll-top or IPX8-sealed bags are safe |
| Skipping the bathtub test | Can’t tell if the seal actually works until things are wet | Test with paper towels before any swim with electronics |
| Overloading past 5.5 inches | Seal doesn’t close fully when the bag is too full | Keep phone, cards, keys — nothing bigger |
| Inflatable bag not inflated fully | Lacks rigidity to hold seal; punctures more easily | Inflate until firm before each use; check for slow leaks |
Limitations You Need to Know Before Buying
Even the best IPX8 bag has limits. The standard Swim Secure bag is not rated for muddy or sandy water because IPX8 does not test for dust ingress — sand can grind into the seal and cause a slow leak over time. Inflatable dry bags like the Wild Swim Bag float and can bump into rocks; a puncture from a sharp edge ends the water protection instantly. And while Swim Secure designs its bags for electronics, no manufacturer guarantees your phone if the seal fails — the risk always sits with the user.
For depths beyond 10 meters, IPX8 is not tested; diving is a different category. Recreational swimming, snorkeling, and even some light freediving are fine, but pressure-rated dive cases are a separate product class.
What to Do Before Your First Swim
Wear the sealed bag in a pool for five minutes with nothing valuable inside. Check for any dampness around the closure. If it passes, add your phone and swim normally — but check the bag’s seal every few uses. A piece of sand or a tiny fold in the seal can turn a perfect day into a wet phone.
The Swim Secure Multi-Use and the various SealLine dry sacks represent the only real options for swimming with valuables. Everything else marketed as a “waterproof purse” is a beach or rain bag, not a swim bag. Buy the tool for the actual activity, not the label.
FAQs
Can I use a Ziploc bag as a waterproof purse for swimming?
A Ziploc bag is not reliable for swimming because the press-seal can pop open under water pressure from movement. It works for brief splashes but will likely leak during continuous submersion. Dry bags are tested to hold their seal under pressure.
Do waterproof purses for swimming float?
Not all of them. Inflatable dry bags like the Swim Secure Wild Swim Bag float naturally because of trapped air. Roll-top fanny packs and standard dry sacks generally sink when air is purged. If flotation matters, pick an inflatable model.
What size phone fits in a swim-secure fanny pack?
Swim Secure’s Multi-Use bag fits phones up to roughly 5.5 inches screen size — about an iPhone 14 Pro or older smaller models. Larger phones like an iPhone 16 Pro Max may not fit without compromising the seal. Always check the bag’s stated maximum dimensions.
Is there a purse-style bag that works for both the beach and swimming?
No single bag excels at both roles if you want a traditional handbag shape. The most practical approach is a small IPX8 fanny pack for swimming and a separate beach tote for towels and sunscreen. Mixing the two usually sacrifices one use case.
How long does an IPX8 bag last before the seal wears out?
With proper care — rinsing after saltwater use, checking for debris on the seal — a quality IPX8 bag lasts several seasons. The sealing track is the most vulnerable part; if it starts to feel soft or no longer clicks shut firmly, replace the bag.
References & Sources
- Swim Secure USA. “Best Waterproof Bag for Swimming.” Details IPX8 Multi-Use Bag, capacity, and safety notes.
- YourSwimLog. “Best Swim Bags Reviews.” Speedo Teamster 2.0 specs and mesh limitations.
- SealLine. “SealLine Storm Sack Dry Bag Info.” Roll-top seal IPX8 rating and testing.
- Outdoorswimmer. “Review: Adventure Bags.” WILD MOOSE Caribou specifications and testing for open water.
- ProSwimwear. “Wild Swim Bag Demo.” Video review of inflatable dry bag for swimming.