Such a lovely dress. It’s light, comfortable and the fit is really flattering. I wore it out for lunch with friends and had so many compliments.
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ISLA WELLINGTON · Clothing > Swimwear > Beach
Coastella – Longline Tankini Set with Boyshorts for Women, Full Coverage Two Piece Swimsuit
$156.00
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See the product description, materials and care details for product-specific information.
Finally, a tankini that stays where you put it
You shouldn't have to tug at your swimsuit all day.
The Coastella longline tankini set is built for real movement — the tank stays down, the boyshorts stay put, and the crisscross V hugs you right where it should.
Walk the shore. Chase the kids. Sit on the towel. Stop checking the mirror.
This is the suit you'll reach for all summer.
One of our most reordered beach sets this season
✓ Longline tank covers the midsection
The tank runs past your hips so you can move, sit, and swim without tugging it back down. No riding up. No gap at the waist.
✓ Crisscross V lifts and holds a full bust
The crossed front strap gives real support up top — even D-cups stay in place through every wave and walk.
✓ Matching boyshorts, full coverage
More skin covered than a bikini bottom, no dig at the waist. Side ties let you adjust the fit through the day.
✓ Quick-dry 4-way stretch fabric
The polyester-spandex blend moves with you and dries in minutes — so you're not sitting in a wet suit on the ride home.
✓ Sizes S–XL, built for real curves
Designed with curvier women in mind. The longline cut and ruched sides flatter the waist, hips, and stomach — not just the model.
What you get today
- Coastella longline tankini set (tank + matching boyshorts)
- Quick-dry, 4-way stretch fabric
- Available in 4 prints, sizes S–XL
- Free tracked US shipping
- 30-day at-home try-on
Seasonal production run — once this batch sells out, restock pricing may change. Grab yours while sizes are in stock.
30-day at-home trial
Try Coastella at home for 30 days. If it doesn't fit, look right, or wear the way you expected, return it for a full refund.
Frequently asked questions
Does the tank stay down when you swim?
Yes — the longline cut and stretchy fabric are designed to stay in place during swimming, walking, and bending. It doesn't ride up like a regular tankini.
Is the fabric see-through when wet?
No. The polyester-spandex blend is thick enough to stay fully opaque wet or dry, including in lighter prints.
Do the boyshorts dig in at the waist?
The waistband is soft and stretchy, not elastic-tight. Most curvier women size up one for the most comfortable fit on the hips.
Can I wear this for water aerobics or beach volleyball?
Yes — the 4-way stretch and full coverage make it ideal for active beach and pool use, not just lounging.
Specifications
- Size: S–XL (see size chart)
- Material: Polyester blend, 4-way stretch, quick-dry
How to wash
- Hand wash cold with mild soap
- Do not bleach
- Lay flat to dry
- Avoid wringing
Eligible change-of-mind returns can be requested within 30 days of receiving your order. Conditions apply and return instructions must be requested before sending an item back.
PRODUCT DETAILS
DESIGNED FOR EVERYDAY WEAR
Finally, a tankini that stays where you put it
You shouldn't have to tug at your swimsuit all day.
The Coastella longline tankini set is built for real movement — the tank stays down, the boyshorts stay put, and the crisscross V hugs you right where it should.
Walk the shore. Chase the kids. Sit on the towel. Stop checking the mirror.
This is the suit you'll reach for all summer.
One of our most reordered beach sets this season
✓ Longline tank covers the midsection
The tank runs past your hips so you can move, sit, and swim without tugging it back down. No riding up. No gap at the waist.
✓ Crisscross V lifts and holds a full bust
The crossed front strap gives real support up top — even D-cups stay in place through every wave and walk.
✓ Matching boyshorts, full coverage
More skin covered than a bikini bottom, no dig at the waist. Side ties let you adjust the fit through the day.
✓ Quick-dry 4-way stretch fabric
The polyester-spandex blend moves with you and dries in minutes — so you're not sitting in a wet suit on the ride home.
✓ Sizes S–XL, built for real curves
Designed with curvier women in mind. The longline cut and ruched sides flatter the waist, hips, and stomach — not just the model.
What you get today
- Coastella longline tankini set (tank + matching boyshorts)
- Quick-dry, 4-way stretch fabric
- Available in 4 prints, sizes S–XL
- Free tracked US shipping
- 30-day at-home try-on
Seasonal production run — once this batch sells out, restock pricing may change. Grab yours while sizes are in stock.
30-day at-home trial
Try Coastella at home for 30 days. If it doesn't fit, look right, or wear the way you expected, return it for a full refund.
Frequently asked questions
Does the tank stay down when you swim?
Yes — the longline cut and stretchy fabric are designed to stay in place during swimming, walking, and bending. It doesn't ride up like a regular tankini.
Is the fabric see-through when wet?
No. The polyester-spandex blend is thick enough to stay fully opaque wet or dry, including in lighter prints.
Do the boyshorts dig in at the waist?
The waistband is soft and stretchy, not elastic-tight. Most curvier women size up one for the most comfortable fit on the hips.
Can I wear this for water aerobics or beach volleyball?
Yes — the 4-way stretch and full coverage make it ideal for active beach and pool use, not just lounging.
Specifications
- Size: S–XL (see size chart)
- Material: Polyester blend, 4-way stretch, quick-dry
How to wash
- Hand wash cold with mild soap
- Do not bleach
- Lay flat to dry
- Avoid wringing
VERIFIED CUSTOMER FEEDBACK
WHAT OUR CUSTOMERS ARE SAYING
4.8
/ 5
6,857
REVIEWS
96%
RECOMMEND
I was unsure about ordering online, but the sizing was spot on. Really pleased with how it looks.
Love the burgundy colour. The cut is very flattering and it stayed comfortable all evening.
The dress fits beautifully and feels really comfortable. The fabric is softer than I expected.
I love how this dress falls. It’s roomy without looking oversized and feels lovely and light on.
This suit fits beautifully. The trousers sit really nicely and the blazer makes the whole outfit look very polished.
The dress fits beautifully and feels really comfortable. The fabric is softer than I expected.
Really happy with this set. The navy is gorgeous in person and it feels very comfortable to wear. Easy to dress up or down.
Really flattering on and true to size. I wore it all afternoon and felt comfortable the whole time.
Such an easy dress to wear. It looks dressed up without feeling too formal.
Simple, elegant and comfortable. It looked even nicer on than I expected
Love the fit around the waist and the way the fabric falls. Very happy with it.
THE ISLA EDIT
STYLE INSPIRATION
THE ISLA WELLINGTON EXPERIENCE
REAL STYLE, MADE FOR REAL LIFE
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30-day return window
Eligible change-of-mind returns can be requested within 30 days of receiving your order.
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Free shipping across New Zealand. Dispatched on the next business day after purchase.
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Product FAQs
How do I choose my size?
Use the product-specific size information and fit guidance shown on the product page. Contact customer support if you need help before ordering.
When will my order arrive?
Orders normally require 1 to 3 working days for processing. After dispatch, estimated delivery is generally 8 to 12 working days, so most orders are expected to arrive approximately 9 to 15 working days after order confirmation. These are estimates, not guaranteed delivery dates.
Can I return an item?
Eligible change-of-mind returns can be requested within 30 days of receiving your order. Conditions apply and return instructions must be requested before sending an item back. Please review our Refund & Return Policy for full details.
How can I contact you?
Email support@islawellington.nz for customer support. Include your order number when contacting us about an existing order.