Sourcy
Sourcy
Sieve Non-Wire Bra

Sieve Non-Wire Bra

by Negative Underwear

mid-tier
US

Trend Summary

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.

Key Features

  • Signature mesh fabric
  • Non-wire
  • Unpadded
  • Architectural silhouette

Featured In

Who What Wear (US)
The Zoe Report (US)
Vogue (International)
Harper's Bazaar (International)

Product Specifications

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)

Differentiation Strategy

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.

Success Replication

This specification replicates the success of the original by using a high-quality, sheer power mesh that offers a similar sexy-yet-minimalist appeal. It retains the surprisingly supportive nature for a wireless bra through carefully constructed seamed cups. The high degree of adjustability with four hook-and-eye rows and quality metal hardware is also kept, ensuring a flexible and premium fit.