Fit & Style · 5 min read
Key takeaways
- One pieces offer the most security for training, surf lifesaving, and competitive swimming
- Separates let you mix sizes and customise coverage across your top and bottom independently
- Both styles are made with the same premium Italian performance fabric and 100% PBT lining
- Your activity level and personal fit preference are the most important factors in choosing
- Many JAYD customers own both, one piece for training, separates for lifestyle and beach days
It is one of the most common questions we get, and honestly, one of the most personal. Whether you reach for a one piece or a set of separates says a lot about how you move through the water and what you want to feel like when you get out of it.
The good news: there is no wrong answer. Both are built to the same standard at JAYD. Here is how to figure out which one is right for you.
What is the difference between a one piece and swim separates?
A one piece swimsuit is a single garment covering the torso from shoulder to hip in one continuous piece of fabric. It moves as one unit with your body, which makes it the preferred choice for training, competition, and any activity where security matters.
Swim separates are a swim top and swim bottom purchased independently. You can mix and match styles, colours, and sizes across each piece, which means you can get a perfect fit even if your top and bottom measurements fall into different size ranges.
| Feature | One Piece | Separates |
|---|---|---|
| Security in the water | ✓ Maximum - moves as one unit | Good - depends on top support required |
| Size flexibility | One size for the whole suit | ✓ Mix sizes across top and bottom |
| Coverage customisation | Fixed by design | ✓ Choose top and bottom coverage independently |
| Best for training | ✓ Preferred for competitive swimming | Good for lower-intensity sessions (although all our bottoms have drawstrings so they will stay put) |
| Mix and match styling | No | ✓ Combine colours and styles freely |
| Bathroom breaks | Requires full removal | ✓ Far easier |
When should you choose a one piece?
A one piece is the right call when performance, security, and simplicity matter more than anything else.
Training and competition
For competitive swimmers, surf lifesavers, and water polo players, a one piece is the standard choice. It does not shift during flip turns, does not adjust on the board, and there is nothing to fidget with between sets or events. Your focus stays in the water where it belongs. Browse the JAYD one piece range to find your training suit.
Open water and surf swimming
In the ocean, waves and current put additional physical demands on your swimwear. A one piece stays put through surf entries, paddling, and the kind of unpredictable movement that open water delivers. For more on choosing swimwear for the ocean, read our guide on the best swimwear for ocean swimming in Australia.
When you want simplicity
One piece, on, done. There is something to be said for a swimsuit that requires zero thought. If you are the kind of person who wants to get in the water without worrying about whether everything is sitting right, a one piece is almost always the answer.
When should you choose swim separates?
Separates are the right call when fit, flexibility, and personal expression matter most.
When your top and bottom are different sizes
This is the biggest practical advantage of separates, and one that makes a real difference to how a swimsuit actually fits. If your bust and hips fall into different size ranges, buying separates means you can get the right fit for each part of your body independently rather than compromising on both. For help with sizing, our size and style guide has everything you need.
When you want to mix and match
Separates open up a completely different world of styling. Mix a colourful bottom with a darker colour top. Pair the same bottom with multiple different tops. Create combinations that work across beach days, pool sessions, and everything in between. Browse the full JAYD swim separates range to see what's possible.
Beach and lifestyle swimming
For lower-intensity water activities, beach days, casual ocean dips, holiday swimming - separates offer all the coverage and comfort you need with more flexibility in how you wear them. They are also significantly easier for bathroom breaks, which matters more than people admit on a long beach day.
Can you train in separates?
Yes, with the right top. JAYD's swim tops are designed with enough structure and support for training sessions. The key consideration is the top style: a fixed-back or tie-back top with good strap security will stay in place through lap swimming and light training. For heavy training, flip turns, or surf lifesaving, a one piece is still the more secure option.
The JAYD community approach
Many women in the JAYD community own both. A one piece for training, carnivals, and ocean swims, separates for beach days, holidays, and days when the vibe calls for something different.
Both are made with the same premium Italian performance fabric and 100% PBT lining, so whichever you choose, the quality and durability are identical.
Frequently Asked Questions
Should I get a one piece or separates for swimming training?
For competitive training, a one piece is the better choice. It stays secure through flip turns, surf entries, and high-intensity sets without shifting or requiring adjustment. Separates work well for lower-intensity training and lifestyle swimming but are generally less secure than a one piece for serious pool or ocean training.
Can swim separates be different sizes for top and bottom?
Yes, and this is one of the biggest advantages of buying separates. If your bust and hip measurements fall into different size ranges, you can order a top in one size and a bottom in another. JAYD separates are designed to work across size combinations, so mixing sizes is completely normal and encouraged.
Are JAYD separates made from the same fabric as the one pieces?
Yes, all JAYD swimwear, whether one piece or separates, is made with a premium Italian performance fabric and a 100% PBT lining. The fabric is chlorine-resistant, colour-retaining, and built for longevity whether you are in the pool, ocean, or anywhere in between.
Which is better for surf lifesaving, a one piece or separates?
A one piece is strongly recommended for surf lifesaving competition and training. It stays put through ocean entries, board paddling, and beach running without requiring adjustment between events. A fixed-back one piece in particular is the standard choice across the surf lifesaving community for exactly this reason.
Can I wear the same swimsuit for training and beach days?
Yes, many JAYD customers use the same suit for both. The performance construction means the suit holds up to training demands while still looking and feeling great on the beach. If you want more styling flexibility for beach days, separates are worth considering alongside a dedicated training one piece.