SIGNATURE O. / FALL 2026

Signature O. Bikini — Warm Bone

Name: Signature O. Bikini — Warm Bone
Brand: OPTIMISM.
SKU: bikini-warm-bone
Price: 50 USD
Availability: OutOfStock

Warm Bone / Espresso
Archived

Signature O. Bikini — Warm Bone in Warm Bone / Espresso — front view, OPTIMISM. FALL 2026

Product Story+

A warm natural jacquard finished with espresso binding and asymmetric silver hardware. Quiet, textural and precise — the neutral state of the Signature O. series, built to sit against skin rather than compete with it.

Materials+

Embossed stretch swim jersey

Made in small runs and checked against the house standard — seam, print placement, hardware and label — before it is packed and sent. We describe the cloth as it is; weight and handfeel are what you will receive.

Care & Keeping+

Made to be worn, not preserved. Cared for as directed below, embossed stretch swim jersey will hold its color, hand and line over time.

Rinse in cold water after wear
Hand wash cold
Dry flat in shade
Do not bleach or tumble dry

Wash less than you think. Airing between wears keeps the garment newer than laundering it does.

Construction+

Gathered bandeau, strapless
Warm bone jacquard surface
Espresso contrast binding
Metal slide hardware
High-leg brief
Fully lined, four-way stretch
Woven OPTIMISM. hem label

Fit, US Sizing & Measurements+

Close Fit

TightFittedTrueRelaxedOversized

Sits close to the body and follows your shape.

Close to the body. Take your usual size.

Take your usual size. Size up if you prefer coverage or are between sizes.

We would rather you order once. The first chart is your body; the second is the garment laid flat. Both are stated to the half inch and can vary a little from piece to piece, as cut cloth does. If you are unsure, write to us with your measurements and we will tell you plainly which size to take.

US Standard Size Chart — Your Body

Size	US Size	Bust	Waist	Hip
XS	0–2	31–32	24–25	34–35
S	4–6	33–34	26–27	36–37
M	8–10	35–36	28–29	38–39
L	12–14	37–39	30–32	40–42
XL	16–18	40–42	33–35	43–45
XXL	20–22	43–45	36–38	46–48

US standard women’s sizing. Body measurements in inches. Between two sizes? Size up for a looser line, down for a closer one.

Shipping & Returns+

Checked against the house standard before dispatch. Sent within 5–7 business days.
Flat USD 7 domestic shipping, 5–10 business days after dispatch. International arranged on request.
30 days to return unworn pieces with tags attached.

Availability+

Archived. 25 were made. This piece is now part of the record.

Authenticity & Provenance+

SIGNATURE O. · LOOK 02 · FALL 2026
Reference F26-BIKINI-BONE
Carries the OPTIMISM. interior label
Made in a small run for the house
Sold only through optimism.fashion

Questions+

How should I size this piece?: US standard sizing. Take your usual size. Size up if you prefer coverage or are between sizes. Close to the body. Take your usual size. The charts above give your body measurements and the garment laid flat, both to the half inch.
Will the color or wash change over time?: Washed and dyed pieces settle with wear. Follow the care notes and the change stays even — that softening is part of the garment, not a fault.
When will it arrive?: Checked against the house standard before dispatch. Sent within 5–7 business days. Flat USD 7 domestic shipping, 5–10 business days after dispatch. International arranged on request.
Can I return or exchange it?: 30 days to return unworn pieces with tags attached.
Will this be made again?: No. This run is complete, and pieces are not restocked once a run closes.

Look 02 / The Piece

Warm Bone / Espresso

A warm natural jacquard finished with espresso binding and asymmetric silver hardware. Quiet, textural and precise — the neutral state of the Signature O. series, built to sit against skin rather than compete with it.

Close to the body. Take your usual size.

Cut in embossed stretch swim jersey for the SIGNATURE O. chapter and made in a small run. Each piece is checked and finished to the house standard before it is packed and sent.

01 / Material