Duo Shell Bikini Set
Duo Shell Bikini Set
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EDITOR'S NOTE
EDITOR'S NOTE
Elevated and earthy, the Duo Shell Bikini Set by Ostra reimagines minimalist swimwear with sculptural charm. This bandeau-style top features a center halter tie and is adorned with a statement resin shell detail that anchors the silhouette with a nod to nature. Crafted from soft, semi-sheer mesh in a green olive tone, the matching high-cut bottoms offer a flattering, elongating fit. A blend of coastal elegance and bold femininity.
PRODUCT DETAILS
PRODUCT DETAILS
- Material: 96% Polyamide, 4% Elastane
- Bandeau top with halter neck tie and sculptural shell centerpiece
- Lightweight stretch mesh fabric with soft lining
- High-cut bottoms with minimal to moderate coverage
- Resin shell accent (handle with care)
SIZE & FIT
SIZE & FIT
Model wears size S
SHIPPING & RETURNS
SHIPPING & RETURNS
Item is returnable within 15 days for an exchange or refund. Learn more in Shipping and Returns section.




Ostra sizing chart
SIZE | CHEST | WAIST | HIP |
XS | 80-85 | 60-65 | 88-96 |
S | 86-90 | 66-70 | 97-101 |
M | 91–95 | 71-74 | 102-107 |
L | 96–100 | 75–80 | 107–111 |