SIGNATURE O. / FALL 2026
Signature O. Bikini — Deep Forest
Deep Forest / Black
Archived
Product Story+
A dark woodland study in washed olive, charcoal and black. Controlled contrast, fixed construction and the signature asymmetric O-ring. The textured surface breaks the color into depth rather than print, holding the house discipline at swim scale.
Materials+
Textured stretch swim jersey
Checked against the house standard — seams, print placement, hardware and label — before dispatch.
Care & Keeping+
Made to be worn, not preserved. Cared for as directed below, textured 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
- Textured house surface in washed olive and charcoal
- Silver O. ring at the hip
- High-leg brief with black binding
- Fully lined, four-way stretch
- Woven OPTIMISM. hem label
Fit, US Sizing & Measurements+
Close Fit
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.
Shipping & Returns+
- Checked against the house standard before dispatch. Sent within 5–7 business days.
- USD 7 domestic shipping (free over USD 45), 5–10 business days after dispatch. International arranged on request.
- 30 days to return unworn pieces with tags attached.
Availability+
Archived. This piece is now part of the record.
Authenticity & Provenance+
- SIGNATURE O. · LOOK 02 · FALL 2026
- Reference F26-BIKINI-FOREST
- 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. USD 7 domestic shipping (free over USD 45), 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?
- When a piece sells through, it is held in the record rather than reproduced.
01 / Material
Textured stretch swim jersey
Sits close to the body and follows your shape.
02 / Construction
Close Fit
- Gathered bandeau, strapless
- Textured house surface in washed olive and charcoal
- Silver O. ring at the hip
- High-leg brief with black binding
Worn Together
Signature O. Bikini — Deep Forest is worn with the zip hoodie set — washed olive in washed olive. The two are cut for the same line.
The pair — USD 125
Add the setComplete the Look
Signature O. Bikini — Deep Forest
Select a size · Archived
