Sourcy

Bra · US

Sieve Non-Wire Bra

This bra is a hallmark of Architectural Minimalism, with its signature mesh fabric and lack of wires or padding, creating a striking yet comfortable silhouette.

Product signals

Brand
Negative Underwear
Source
brand_models
Key features
Signature mesh fabric · Non-wire · Unpadded · Architectural silhouette
Source mentions
Who What Wear (US), The Zoe Report (US), Vogue (International), Harper's Bazaar (International)

Specification variants

2 static directions are available for this theme.

mid-tier

Geometric Mesh Bralette

Primary Material
Sheer power mesh
Fiber Composition
78% Nylon, 22% Spandex
Material Certification
OEKO-TEX® STANDARD 100
Style
Non-wire, unpadded bralette with design accents
Cup Style
Sheer mesh cups with geometric seam details
Support
Moderate support, wireless
Shape
Provides a natural, lifted, and separated shape
Straps
Adjustable shoulder straps
Strap Hardware
Matte black or rose gold metal slide adjusters
Back Closure
Adjustable hook and eye closure
Number of Hooks
Four rows of hooks
Seams
Geometric and vertical cup seams for shaping
Band
Elasticated bottom band with soft-touch finish
Size System
Band and cup-based sizing (e.g., 32B, 32C, 34B, etc.)
Available Colors
Core (Black, Buff) + seasonal fashion colors (e.g., Cobalt, Garnet, Moss)
Finish
Sheer mesh with potential for color-blocked panels
Key Feature
Supportive non-wire design with a modern, architectural aesthetic
Country of Origin
Made in Sri Lanka / Indonesia
Care Instructions
Hand wash cold, lay flat to dry

This product differentiates itself by leaning into a more expressive and accessible design. While the reference product is strictly minimalist, this version introduces geometric seam lines or subtle color-blocking as a design signature. It moves to standard industry sizing (34B, etc.) which is more familiar to the mid-tier consumer than a proprietary scale. A key differentiator is the embrace of a wider, seasonal color palette to capitalize on fashion trends.

premium

Sculptural Silk-Trim Bralette

Primary Material
Italian or Swiss-made sensitive-touch micromesh
Fiber Composition
72% Polyamide, 28% Elastane
Material Certification
OEKO-TEX® STANDARD 100 and/or Bluesign® certified fabric
Style
Non-wire, unpadded, high-apex bralette
Cup Style
Sheer, fine-gauge mesh with intricate, sculptural seam work
Support
High support for a wireless style, engineered fit
Shape
Provides a lifted, defined, and naturally enhanced shape
Straps
Adjustable shoulder straps with silk-wrapped detail
Strap Hardware
Custom-designed, 24k gold-plated slide adjusters
Back Closure
Adjustable hook and eye closure
Number of Hooks
Four rows of micro-feel hooks
Seams
Asymmetrical and ergonomic seams designed for a sculptural fit
Band
Wide, silk-charmeuse wrapped bottom band
Size System
Proprietary sizing system with an expanded range of intermediate '+' sizes
Available Colors
Black, Espresso, and limited-edition curated shades
Finish
Ultra-sheer, luxurious finish with contrasting silk trim
Key Feature
Exquisite materials and advanced construction for superior comfort and support
Country of Origin
Made in Portugal / Italy
Care Instructions
Hand wash only, lay flat to dry

Differentiation is achieved through uncompromising luxury and elevated craftsmanship. The use of superior, European-sourced micromesh and genuine silk trims creates a distinct material advantage. The construction is more complex, featuring unique sculptural or asymmetrical seams as a design signature. Luxury details like gold-plated hardware and a 'Made in Europe' origin story justify a higher price point and appeal to a discerning luxury consumer.