The Open Back Halter Top Pattern

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What Is the Open Back Halter Top Tool?

A fully custom, measurement-based pattern drafted exactly for your body, your fabric, and your design vision. This is not a standard sized pattern. It is a drafting tool that generates your pattern from your exact measurements, or from our built-in ASTM size table measurements, along with your chosen stretch percentage and construction preferences.

The Open Back Halter Top uses balanced stretch drafting to create a secure, performance-ready silhouette with a clean open-back design. The structure distributes tension through the neckline, shoulders, and torso while allowing you to control how high or low the back sits. The result is a flattering, sculpted shape that supports movement without compromising design.

Because the pattern is generated from your exact measurements, shaping is built directly into the draft. Instead of modifying between sizes or adjusting fit after printing, the garment is created to match your proportions from the start. Whether you are designing a dance costume, sports bra, tank, or shelf-bra top, the foundation remains precise and performance-focused.

The tool allows you to adjust back height, neckline width, shoulder coverage, waistband placement, and armhole ease while maintaining structural balance. Each change works within the drafting system so your variations remain clean, wearable, and tension-correct.

Because MiSlope drafts from measurement data and stretch logic, the pattern fits your body as it is. No grading. No guesswork. No stacking sizes. Just precise shaping and professional stretch drafting built into every variation.

One base. Multiple silhouettes. Custom fit without the extra steps.

Key Features:

• Custom Fit: Generated from your personal measurements for a made-to-measure result.

• Open Back Design: Adjust the height of the open back to sit closer to or farther from the nape.

• Flexible Neckline: Widen the neck hole to create a boat neck or keep it closed with enough width to skip a closure.

• 2-in-1 Pattern: Choose waistband placement under the bust or at the waist to create a sports bra, tank, or tank with a shelf bra.

• Adjustable Shoulder Coverage: Customize strap length from narrow to full shoulder width.

• Armhole Ease Control: Set your preferred amount of ease at the armhole side seam.

• Seam Allowance Options: Add custom seam allowances at the neckline, armholes, and waistband for binding or a clean, consistent finish.

Works Across Kids, Teens, and Adult Sizing

MiSlope is designed to grow with the wearer. In addition to drafting from custom measurements, the tool includes built-in ASTM sizing tables so you can generate patterns even when exact measurements are not available.

Draft using ASTM Girls sizing tables (sizes 2–20) for children and youth garments, making it ideal for dancewear, swimwear, skating costumes, and growing bodies where consistent sizing is needed.

For teens and adults, you can draft using ASTM Missy Straight or ASTM Missy Curvy sizing tables, allowing you to start from an industry-standard proportion set while still maintaining stretch-specific drafting and negative ease control.

Whether you are sewing for children, teens, or adults, MiSlope provides a consistent drafting foundation across size ranges, so you can design once and scale confidently without switching pattern systems.

Printing Features

• Dynamically tiles your pattern into A4 compatible files so you can print your pattern like a regular PDF using your home printer
• 1 inch calibration square to ensure your pattern is printed correctly to scale

Projector Sewing or Vector Drafting Compatible

• Open your one-page canvas and use it directly with your projector, or open it in your vector drafting software of choice to continue drafting and design work
• 1 inch calibration square to ensure your pattern is projected correctly to scale