Is the SF811 suitable for big busts?

Yes! The thick X-back straps and plus-focused side panels give gentle, even support without underwires.

Does it have underwire?

No. Support comes from the design, thick straps, and stretch panels, making it comfortable for extended wear.

Is the fabric chlorine-resistant?

Absolutely. The Carvico Xlance eco-fabric resists chlorine, holds its shape, and maintains colour even with frequent pool use.

How should I choose my size?

Measure bust, underbust, waist, and hips. If you’re tall, long-bodied, or prefer a looser fit, size up. For narrower hips or a snug fit, stay true to your guideline size. Refer to the size chart for exact measurements.

Will the swimsuit stretch or loosen over time?

The stretch side panels adapt to your curves while the Xlance fabric maintains elasticity and shape, even after repeated use.

Is it suitable for aqua fitness or swimming lessons?

Yes! Customers love the SF811 for pool workouts, aqua aerobics, and lap swimming thanks to its secure X-back and comfortable support.

How do I care for my SF811 swimsuit?

Rinse in cool water after every swim, hand wash with mild detergent, avoid fabric softeners, and dry flat out of direct sunlight to preserve colour and elasticity.

Plus Size X-Back Swimsuits (SF811) – Supportive Thick Straps

Discover the SF811 Plus Size X-Back swimsuit, designed for women who want secure support, confident coverage, and chlorine-resistant durability. With its thick, cross-back straps, this suit stays comfortably in place through laps, lessons, and aqua fitness.

The Plus Size X-Back Swimsuit SF811 is a supportive and durable one-piece designed especially for curvier body shapes. With its thick straps, this swimsuit stays securely in place while giving you freedom of movement for pool swimming, aqua aerobics, or open water use. The X-back style distributes weight evenly across the shoulders, making it comfortable for longer wear.

What makes this swimsuit stand out is its clever use of side panels. These panels provide stretch and adaptability where it matters most, ensuring the swimsuit adjusts naturally to the curves of a plus-size figure. Combined with front and bottom lining for structure and modesty, the SF811 balances support with flexibility, giving a comfortable fit without wires or hard shaping.

Built from eco-friendly, chlorine-resistant Carvico Xlance fabric, the SF811 is made for regular swimmers who want lasting colour, shape retention, and all-day comfort. The cut is slightly shorter in the body length than the similar SF821 style, so taller women or those who prefer extra room may wish to size up.

Customer wearing SF811 plus size X-back swimsuit with thick straps, showing supportive fit and bust coverage

At a Glance – SF811 Plus Size X-Back

Straps & Back: Thick straps with secure X-back design for stay-put comfort.
Coverage: Supportive plus-size cut with modest front and bottom lining.
Lower neck line and under armpits than SF821.
Stretch Panels: Side panels allow natural stretch and flexibility for curvy fitting.
Fabric: Eco-friendly, chlorine-resistant Carvico Xlance for durability and colour hold.
Best For: Plus-size swimmers seeking supportive, long-lasting swimwear for training, aqua fitness, and leisure.
Sizing Tip: Shorter in body length than SF821 – taller or long-bodied customers may want to size up.

Buy XBack SF811

Care & Durability – Carvico Xlance Eco Fabric

High-Performance Fabric: Made with Carvico Xlance, offers exceptional chlorine resistance and long-lasting shape.
Eco-Friendly: Sustainable fibre reduces environmental impact while providing excellent stretch and recovery.
Shape Retention: Maintains elasticity and fit even with frequent pool use.
Care Tips:

Rinse in cold water immediately after swimming.

Hand wash with mild detergent; avoid fabric softeners.

Dry flat in the shade to preserve colour and elasticity.

Longevity Promise: Customers report lasting comfort and durability, outperforming standard swimsuits.

About Fabrics and Care

Fit & Sizing Guide – SF811

General Fit: Designed shorter in body length compared to SF821.
When to Size Up: Tall, long-bodied, wider hips, or preference for a looser fit → consider one size up. Two or more factors → two sizes up.
When to Stay True to Size: Average height and snug, supportive fit → guideline size.
Example Fit:
- UK size 14, 5’3”, snug fit → 36.
- UK size 14, tall/long-bodied, looser preference → 38 (or 40 if multiple factors apply).
- UK size 22/24 → 48, depending on height and preference.
Narrower Hips & Legs: Choose smaller size to avoid looseness; fabric will naturally stretch to fit curves.

Real Customers, Real Fit

We know that choosing the right plus size swimsuit online can feel tricky, which is why we share customer photos and feedback to help you shop with confidence. The picture on this page shows the Xback SF811 in real life, worn by our amazing customers.
Every body is unique, and our community feedback is the best way to see how the side panel stretch design adapts to different shapes. Many customers tell us they feel comfortable, supported, and stylish, whether at the swimming pool, the sea, or on holiday.
We love when you share your photos and experiences and giving us your opinion about new prints. Share your own photo on our page @curvybathers to help other women find their ideal fit and inspire others on their swimwear journey!