Brands / SIR / Clothing / Swimwear / SIR. Sona String Bottom

SIR. Sona String Bottom

Name: SIR. Sona String Bottom
Brand: SIR.
SKU: SIR326-0001 B
Price: 140.00 USD
Availability: InStock

SIR.

$140.00

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Product Insights & Style Tips

The SIR. Sona String Bottom in Black channels a sun-warmed, minimal mood. Lightweight swim fabric skims the skin and moves with you, while the self fabric and its lining keep the silhouette smooth and secure. The string side ties carve clean lines across the hips, letting you adjust coverage with a pull and a twist while the rest of the look stays sleek and simple.

Side tie closures let you tailor the fit across sizes 0/XS through 3/L, contouring to your curves as you move. The nylon-spandex blend brings gentle stretch for posing, swimming, or lounging, and the lining adds a touch of coverage beneath the ultra-sleek exterior. Quick-drying and care-ready, it travels with ease between pool days and warm-weather escapes. Item not sold as a set.

SIR. Leans into sleek, minimal swim that reads editorial even during a quick dip, pairing well with a bold top or a sheer cover-up for in-between moments.

Materials / Fabrication

Self: 76% nylon, 24% spandex
Lining: 74% nylon, 26% spandex
Lightweight swimwear fabric
Side tie closures
Item not sold as a set

Recommended Care

Hand wash cold with mild detergent; gently agitate and rinse well
Do not wring or twist; press out excess water softly
Lay flat or hang dry away from direct heat
Avoid ironing; fabric may be damaged by high heat

Fit Notes

Side tie closures let you adjust the coverage at the hips.
Self fabric is 76% nylon and 24% spandex; lining is 74% nylon and 26% spandex.
Available sizes include XS 0, S 1, M 2, and L 3.

Styling Tips

Pair it with sandals to keep the side-tie silhouette breezy against the lightweight swim fabric.
Carry a nylon designer bag to balance the compact bottom and keep the look cohesive.
Top it off with a hat for a simple, cohesive finish.

Style Check

Aesthetics: 9/10

Bold, barely-there silhouette with adjustable side ties for a high drama factor. The Sona String Bottom in black exudes editorial edge, pairing best with statement tops or monochrome looks. Minimal coverage amplifies the sculptural lines, while the glossy swim fabric catches light for a clean, model-off-duty appeal.

Craftsmanship: 7/10

Construction reads clean and functional: narrow side ties finished with secure knots, even topstitching along the edges, and a lined gusset for comfort and coverage. The fabric has sufficient stretch for mobility without appearing flimsy. Overall, a solid execution for a minimal swim piece, though not a technical-heritage tailoring moment.

Affordability: $$$$

With premium nylon and spandex blends and a razor-sharp black palette, the value feels justified for a statement swim essential. The minimalism plus adjustable side ties elevates its desirability, aligning cost with design rather than mere ubiquity. The price sits at a level that signals exclusivity without sacrificing practicality.

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About SIR

SIR The Label is an Australian fashion label with a sustainable background. The cult Australian fashion label was founded by Sophie Coote and Nikkie Campell in 2014, delivering socially conscious minimalism with a free-spirited edge since its inception. Think 70’s, 80’s inspired silhouettes with a beachy aesthetic that can be worn whether you’re beach side or hitting the town. Shop the latest collection from SIR The Label, ranging in dresses, shirts, skirts, pants and swimwear.