JAYD athlete, Lizzie Welborn, wearing a dark gray one-piece swimsuit with neon yellow straps, photographed from behind while standing on a rocky seaside promenade with the ocean and blue sky in the background.
JAYD athlete, Lizzie Welborn, wearing a dark grey one-piece swimsuit with bright yellow straps stands on a rocky beach with the ocean and blue sky in the background.
JAYD athlete, Lizzie Welborn, seen from behind wearing a dark grey Siena one-piece JAYD swimsuit with bright yellow straps, standing by a swimming pool and holding a green towel.
JAYD athlete, Lizzie Welborn, shown from the back wearing a dark gray JAYD Swimwear Siena one-piece swimsuit with bright yellow straps and trim, standing outdoors near the ocean with buildings visible in the background.
JAYD athlete, Lizzie Welborn, stands with her back to the camera on a rocky coastal walkway, wearing a dark gray carbon JAYD Swimwear siena one-piece swimsuit with a bright yellow-green crisscross back strap. She is looking out over the blue ocean and distant cliffs under a clear blue sky.
JAYD athlete, Lizzie Welborn, stands on a concrete poolside deck with her back to the camera, wearing a carbon gray JAYD Swimwear Siena one-piece swimsuit with bright yellow strappy details on the back. She has a green and white JAYD towel draped over her shoulder, with a rocky coastline and blue ocean in the background.
JAYD athlete, Lizzie Welborn, viewed from behind wearing a dark carbon gray JAYD Swimwear Siena one-piece swimsuit with bright yellow strappy details, standing by a rocky ocean shoreline under a clear blue sky.
JAYD athlete, Lizzie Welborn, wearing a dark gray one-piece swimsuit with neon yellow straps, photographed from behind while standing on a rocky seaside promenade with the ocean and blue sky in the background.
JAYD athlete, Lizzie Welborn, wearing a dark grey one-piece swimsuit with bright yellow straps stands on a rocky beach with the ocean and blue sky in the background.
JAYD athlete, Lizzie Welborn, seen from behind wearing a dark grey Siena one-piece JAYD swimsuit with bright yellow straps, standing by a swimming pool and holding a green towel.
JAYD athlete, Lizzie Welborn, shown from the back wearing a dark gray JAYD Swimwear Siena one-piece swimsuit with bright yellow straps and trim, standing outdoors near the ocean with buildings visible in the background.
JAYD athlete, Lizzie Welborn, stands with her back to the camera on a rocky coastal walkway, wearing a dark gray carbon JAYD Swimwear siena one-piece swimsuit with a bright yellow-green crisscross back strap. She is looking out over the blue ocean and distant cliffs under a clear blue sky.
JAYD athlete, Lizzie Welborn, stands on a concrete poolside deck with her back to the camera, wearing a carbon gray JAYD Swimwear Siena one-piece swimsuit with bright yellow strappy details on the back. She has a green and white JAYD towel draped over her shoulder, with a rocky coastline and blue ocean in the background.
JAYD athlete, Lizzie Welborn, viewed from behind wearing a dark carbon gray JAYD Swimwear Siena one-piece swimsuit with bright yellow strappy details, standing by a rocky ocean shoreline under a clear blue sky.

SIENA ONE PIECE - Carbon|Daffodil

$90.00 AUD Final Sale • Save
Colour Carbon | Daffodil
JAYD athlete, Lizzie Welborn, wearing a dark gray one-piece swimsuit with neon yellow straps, photographed from behind while standing on a rocky seaside promenade with the ocean and blue sky in the background.
Athlete Kate wears the fixed back one piece called Siena, in the colour Acai. This piece is designed by JAYD Swimwear and is made from chlorine resistant material.
Athlete Molly wears the Siena fixed-back one piece by JAYD Swimwear in the colour lilac haze. This piece offer mid coverage and it built for performance.
Athlete Sara wears the Siena one piece by JAYD Swiwmear. This one piece is chlorine resistant and built for performance. She is wearing the colour Mykonos.
Back view of athletic swimsuit Siena One Piece in Pink Sorbet by JAYD Swimwear
Back view of model wearing Siena One Piece Athletic Swimsuit in Atlantic green by JAYD Swimwear
Back view of athletic swimsuit Siena One Piece in Fiesta by JAYD Swimwear
Back strap view of athletic swimsuit Siena One Piece in Navy by JAYD Swimwear
Side view of athletic swimsuit Siena One Piece in Cobalt Blue by JAYD Swimwear
Side view of athletic swimsuit Siena One Piece in Ruby Red by JAYD Swimwear
Front view of athletic swimsuit Siena One Piece in Cove Green by JAYD Swimwear
Back view of athletic swimsuit Siena One Piece in Black by JAYD Swimwear
JAYD Swimwear athlete Elyse wears the fixed back Siena one piece in the colour cinnamon, this piece is made from chlorine resistant material and offers a supportive, flattering fit.
Size Ladies 6
SIZE GUIDE
Adding to Cart Added to Cart

The MVP of support has arrived! Siena knows exactly what you need: mid-cheek coverage and a wider back strap for ultimate bust security. Flattering? Check. Secure? Double check. Siena’s got your assets covered — keeping you classy, confident, and ready for anything.

Designed by Surf Ironwoman Lizzie Welborn 💛

WHY THE SIENA AMAZES:

  • Fixed Back Design: Ensuring a streamlined fit that is supportive and stable as you power through the water. Focus on your strokes without the distraction of loose straps or ties undoing.
  • Reinforced Stitching: Built to endure the rigours of intense training, the Siena boasts insanely durable construction with reinforced stitching.
  • Lined for Confidence:Providing the utmost coverage and confidence. No more worries about transparency, just pure focus on your performance.
  • Chlorine-Resistant Fabric: Embrace the pool without fear of fading! Crafted from 100% chlorine-resistant fabric, ensuring vibrant colours that stay true even after repeated exposure to pool chemicals. Your swimwear will look as fresh as your performance.

To find your best fit, please refer to the measurements in our JAYD SIZING GUIDE

Our suits are designed to fit snug so they stay put while you’re on the move, but don’t worry - they’ll loosen up a bit when wet. However, if you do prefer a more relaxed fit, we suggest sizing up.

CHEST: Measure around the fullest part of the bust.

TORSO LOOP: Measure from the top of your shoulder over the fullest part of your bust, through your legs and back up to the starting point.

WAIST: Measure around the smallest part of the waist.

HIPS & CHEEKS: Measure around the fullest part of the hips. 

Our one pieces are designs to sit higher on the hips, so ensure it fits snugly around your pelvis and rests on or above your hip bone when you first try it on. If the suit doesn't sit high enough on your hips, the torso will feel too short, resulting in an overall improper fit.

View our size guide for more fit details.

Lizzie wears a size 10 (Torso loop 152cm, Hips 98cm, Waist 75cm, Height 163cm, Chest 92cm)

*** Please ensure ALL YOUR DETAILS are correct when checking out. We work around the clock to get your orders to you as quickly as we can, so once you've received your confirmation email we are unable to cancel your order or make changes to your address, products, or other order details ***

FREE SHIPPING for AU orders over $150, NZ  orders over AU$180, and international orders over AU$200 (excl. US). 

Click + Collect is also always free (pick up from our Gold Coast warehouse on weekdays).

Other shipping rates are as follows:

Australia

  • Standard: AU$10 (5–15 business days)
  • Express: AU$15 (2–5 business days)

New Zealand

  • Standard: AU$14 (5–15 business days)
  • Express DHL: AU$25 (2–5 business days)

USA

  • US Standard: AU$18 (5–15 business days)
  • Shopping from the US? You’ll get faster, FREE shipping over at us.jaydswimwear.com 🇺🇸

South Korea

  • Standard: AU$14 (5–15 business days)
  • Express DHL: AU$45 (3–7 business days, not available in all areas)

Rest of World

  • Standard: AU$14 (5–15 business days)
  • Express DHL: AU$35 (3–7 business days, not available in all areas)

Please note that shipping fees do not include any applicable importation charges, taxes, tariffs, or duties, which remain the responsibility of the customer.

View our SHIPPING POLICY

Customer Reviews

Overall rating: 5.0 / 5 from 13 reviews.

Customer photo review of SIENA ONE PIECE - Carbon|Daffodil

I tried a new back style, and it feels really supportive around the chest. I think it’ll be great for training!

Kangmin 5/5 Verified

SIENA ONE PIECE - Carbon|Daffodil

Customer photo review of SIENA ONE PIECE - Carbon|Daffodil

The Carbon and Daffodil color combination is amazing! But I was surprised that the coverage was the same as the Lennox, despite being described as mid coverage.😵

Ji Young 5/5 Verified

SIENA ONE PIECE - Carbon|Daffodil

Customer photo review of SIENA ONE PIECE - Carbon|Daffodil

귀엽고 어려보인다고 들었어요. 신나서 자주 입습니다. 다포딜끈=사랑 이에요^^

Hangsoo 5/5 Verified

SIENA ONE PIECE - Carbon|Daffodil

Customer photo review of SIENA ONE PIECE - Carbon|Daffodil

I really love the yellow accents on the gray base. I wear it when I want to show off subtly without being too flashy.

Jiyeon 5/5 Verified

SIENA ONE PIECE - Carbon|Daffodil

Customer photo review of SIENA ONE PIECE - Carbon|Daffodil

JAYD SIENA Carbon | Daffodil The Jayd Siena, designed by Lizzie Welborn, a professional surf ironwoman (Australian pro ocean athlete). A carbon base with daffodil-yellow accents. The model is 163 cm tall and wears an AU 10. I’m 163.6 cm with a 147 cm torso, and I usually wear a comfortable size 10 in Jayd swimsuits. This is my first Siena, but since my measurements are close to the model’s, I went with the same size. The hip coverage, bikini line, and overall fit are similar to the Lenox. The Siena feels a bit more comfortable through the upper body.

Kwon 5/5 Verified

SIENA ONE PIECE - Carbon|Daffodil

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