Examples10 min read

AI Tech Pack Example: Midi Wrap Dress

The wrap dress is one of fashion's most enduring silhouettes, combining flattering fit with functional versatility that translates across casual, workwear, and occasion contexts. First popularized by Diane von Furstenberg in the 1970s, the wrap construction creates a universally flattering V-neckline, adjustable waist definition, and an easy on-off wearing experience. However, the wrap mechanism introduces construction complexities that do not exist in pull-on or back-zip dresses, including tie attachment engineering, wrap overlap management, and asymmetric pattern layout. This AI tech pack example demonstrates how Skema3D specifies a midi wrap dress with the precision required for consistent factory production, addressing the fit-critical details that determine whether a wrap dress flatters or frustrates.

Design Overview

This midi wrap dress targets the contemporary womenswear market for versatile day-to-evening wear. The design uses a true wrap construction where the bodice panels cross and secure with an internal D-ring and an external tie at the left side waist. The skirt portion falls from a natural waistline to a midi length at mid-calf, with a slight A-line flare that provides movement without excessive volume. The silhouette is fitted through the bodice and relaxed through the skirt.

Short kimono-style sleeves provide arm coverage while maintaining the dress's seasonless wearability. The V-neckline depth is calibrated to be flattering without requiring a modesty snap or pin in standard wearing. A self-fabric waist tie, cut on the bias for supple draping, wraps around the body and ties at the left waist with sufficient length for a full bow.

  • Style: True wrap midi dress with side tie closure
  • Fit: Fitted bodice, A-line skirt, natural waist
  • Length: Midi, approximately 115 cm from HPS in size M
  • Sleeves: Short kimono style, approximately 20 cm
  • Target market: Contemporary womenswear, day-to-evening
  • Size range: XS, S, M, L, XL
  • Colorways: Black, Burgundy, Forest Green, Cobalt, Printed (floral)

Fabric Specifications

The body fabric is a 150 GSM matte jersey composed of 95% viscose and 5% elastane. Viscose provides the fluid drape essential for a wrap dress silhouette, as the fabric must flow over the body without clinging or riding up during movement. The matte finish avoids the shine associated with polyester jersey that can read as inexpensive under direct light. The five percent elastane content provides stretch recovery that maintains the bodice fit and prevents permanent stretch marks at stress points around the wrap closure.

The fabric is piece-dyed to ensure even color coverage across the flat surface that the wrap dress presents, where dye inconsistencies would be immediately visible. For the floral print colorway, a reactive digital print is applied to the greige viscose-elastane base before finishing, producing sharp botanical detail with excellent wash fastness. The fabric receives a light calendering finish that smooths the surface without eliminating the matte texture.

  • Composition: 95% viscose, 5% elastane matte jersey
  • Weight: 150 GSM
  • Drape coefficient: Low (high drape), suitable for fluid silhouettes
  • Print method (floral colorway): Reactive digital print
  • Color fastness: Grade 4 minimum (ISO 105-C06, washing at 40 degrees Celsius)
  • Shrinkage tolerance: Maximum 3% length, 2% width after first wash

Measurement Chart — Size M Base

Wrap dress measurements require additional specification points compared to standard dresses, including wrap overlap distance, tie length, and neckline depth that accounts for the crossover geometry. All measurements are flat measurements in centimeters with plus or minus one centimeter tolerance unless otherwise noted. Grading increments are 2 centimeters for circumference and 2 centimeters for length between adjacent sizes.

  • Bust width (underarm level): 46 cm
  • Waist width (at natural waist seam): 38 cm
  • Hip width (at fullest point): 50 cm
  • Total length (HPS to hem): 115 cm
  • Bodice length (HPS to waist seam): 40 cm
  • Skirt length (waist seam to hem): 75 cm
  • Shoulder width: 40 cm
  • Sleeve length: 20 cm
  • Sleeve opening: 34 cm
  • Neckline depth (center front V-point): 22 cm
  • Wrap overlap at waist: Minimum 15 cm
  • Tie length (each side): 80 cm
  • Tie width: 4 cm

Wrap Closure Engineering

The wrap closure is the most construction-critical element of this garment. The right front panel wraps underneath and secures to an internal D-ring sewn into the left side seam at waist level. The D-ring is a 25 millimeter nickel-free metal ring attached with a reinforced fabric tab that distributes the pull force across a 5 centimeter area rather than concentrating stress at a single point. The internal tie that threads through the D-ring is a 2 centimeter wide strip of body fabric, providing secure closure without visible bulk.

The external left front panel wraps over the right panel with a minimum 15 centimeter overlap at the waist in all sizes. This overlap is critical: less than 12 centimeters creates a gap risk during movement, while more than 20 centimeters adds unnecessary fabric bulk at the waist. The external self-fabric tie emerges from the left side seam at waist level, wraps around the back, and ties at the left waist. Total tie length of 80 centimeters per side allows a full bow tie for sizes XS through L, with an additional 5 centimeters per size above L.

  • Internal closure: D-ring at left side seam, 25 mm nickel-free metal
  • D-ring tab: Reinforced fabric, 5 cm stress distribution area
  • Internal tie: 2 cm wide body fabric strip
  • External wrap overlap: Minimum 15 cm at waist in all sizes
  • External tie: Self-fabric, cut on bias, 4 cm wide, 80 cm long each side
  • Tie finishing: Clean-turned with interior seam, pressed flat

Bodice and Skirt Construction

The bodice is constructed with front and back panels joined at the shoulder seams and side seams. The front panels are cut with a dart at the underbust to provide shaping that follows the body contour without relying on the wrap tension alone for fit. This dart is essential for consistent fit across body types, as a dartless wrap bodice relies entirely on the wrap tension and can produce inconsistent neckline depths depending on the wearer's bust measurement. The dart extends from the side seam toward the bust point, ending 3 centimeters from the bust apex.

The skirt attaches to the bodice at the natural waistline with a seam that is pressed toward the bodice and topstitched at 2 millimeters from the seamline. The skirt panels are cut with a slight A-line flare that adds approximately 15 centimeters of sweep compared to the hip measurement. The hem is finished with a 1.5 centimeter single-fold turn secured with a blind hem stitch that is invisible from the exterior, maintaining the clean drape of the viscose jersey.

Finishing and Quality Control

All seams are sewn with polyester thread in a color matched to the body fabric. Overlock seams use a three-thread configuration at 12 stitches per inch. The neckline is finished with a 1 centimeter single-fold clean finish that follows the V-neckline geometry, with special attention to the transition point where the V meets the wrap crossover. This transition point is the most technically demanding sewing operation on the garment and requires an experienced operator to achieve a smooth, unbroken fold line.

Quality control inspections verify wrap overlap dimensions in each size, tie length symmetry between left and right ties (tolerance plus or minus 1 centimeter), D-ring attachment strength (minimum 10 kilogram pull test), neckline depth at center front (tolerance plus or minus 0.5 centimeters), and overall hem levelness when the garment is placed on a dress form. The AQL standard is 2.5 for critical defects including closure failures and 4.0 for minor defects.

  • Seams: 3-thread overlock, 12 SPI, color-matched polyester thread
  • Neckline: 1 cm single-fold clean finish
  • Hem: 1.5 cm single fold, blind hem stitch
  • D-ring pull test: Minimum 10 kg
  • Tie symmetry: Plus or minus 1 cm between left and right
  • AQL: 2.5 critical, 4.0 minor

Frequently Asked Questions

Why is viscose preferred over polyester for a wrap dress?

Viscose provides the fluid drape that a wrap dress requires to fall gracefully over the body. The fiber's weight and limpness allow the fabric to follow body contours smoothly and create the gentle swing in the skirt that characterizes a well-made wrap dress. Polyester jersey tends to be lighter and springier, which can cause the wrap panels to shift out of position and the skirt to lack the graceful movement that defines the silhouette. Viscose also breathes better than polyester, an important comfort factor for a dress intended for all-day wear. The tradeoff is that viscose requires more careful handling during cutting and sewing, and is more susceptible to shrinkage, which is why the tech pack specifies strict shrinkage tolerances.

How do you prevent a wrap dress from gapping open?

The three-part closure system in this tech pack prevents gapping. First, the internal D-ring closure secures the underlapping panel at the waist, creating a stable foundation that does not rely on the external tie alone. Second, the minimum 15 centimeter wrap overlap provides sufficient coverage that even if the top layer shifts slightly during movement, the underlapping panel maintains coverage. Third, the underbust dart in the bodice ensures that the bodice fits the body contour rather than relying on wrap tension, which eliminates the neckline gapping that occurs when a dartless bodice is pulled flat across the bust. Some designers add a small snap at the neckline V-point as additional insurance, but with proper dart placement and adequate overlap, this should not be necessary.

Can Skema3D generate tech packs for other dress silhouettes?

Yes. Skema3D generates tech packs for all standard dress silhouettes including shift dresses, fit-and-flare dresses, bodycon dresses, shirt dresses, and maxi dresses. Each silhouette triggers different specification templates: a shift dress tech pack emphasizes minimal darting and straight body measurements, while a fit-and-flare tech pack includes detailed specifications for the waist seam construction and the flared skirt's sweep measurement. Describe the silhouette, length, closure type, and intended occasion in your prompt, and the AI will generate category-appropriate specifications.

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