KNIT HALTER CROP TOP PATTERN BLOCK PDF | BACKLESS | XXS–6XL

Knit Halter Crop Top Pattern Block PDF

Create your own backless tops with this knit halter crop top pattern block in sizes XXS–6XL. The design features a halter neckline, cropped length, open back and back tie.

Designed for knitted and stretch fabrics, this block provides a starting point for developing your own halter tops, cropped tops and backless designs.

All our patterns are 100% human-made—professionally drafted and graded by real pattern makers, not AI-generated. Thank you for supporting independent pattern designers.

This is a printable pattern block, not a finished sewing pattern. Seam allowances, cutting instructions and step-by-step sewing instructions are not included.

What is a pattern block?

A pattern block, also called a sloper, is a base template used to develop your own garment designs. You can use this block in its original form after adding seam allowances, or modify its shape, length and design details.

Basic knowledge of pattern making and garment construction is required.

Design features

• Halter neckline.
• Cropped length.
• Open, backless design.
• Back tie.
• Designed for knitted and stretch fabrics.

Pattern pieces included

• Front halter crop top piece.
• Back tie piece.

Sizes included

XXS, XS, S, M, L, XL, 2XL, 3XL, 4XL, 5XL and 6XL.

Please check the body-measurement chart in the listing images before selecting your size.

We recommend making a test garment in fabric with similar stretch and recovery to your final fabric, especially after modifying the block.

Digital files included

• A4 PDF for home printing on A4 paper.
• US Letter PDF for home printing on US Letter paper.
• A0 PDF for large-format copy-shop printing.
• Projector PDF for home sewing projectors.
• Size Chart PDF.

A4 and US Letter pages require assembly. Use the A0 file for large-format printing at a copy shop.

The projector file is protected and designed for projection, with extra spacing between the pattern pieces. Use the supplied printable PDFs for paper printing; all pattern pieces are included in those files.

Instant digital download only. No physical pattern or finished garment will be shipped.

Printable PDF version

This listing contains PDF files for printing and projection. They are not intended for digital pattern editing in Adobe Illustrator.

If you want to alter the pattern digitally in Adobe Illustrator, choose the separately sold editable version.

Recommended fabrics

This block is designed for knitted and stretch fabrics only. It is not suitable for woven, non-stretch fabrics.

Suggested fabrics include jersey, ribbed knit, Lycra or spandex blends, modal knit and bamboo knit.

Stretch and recovery vary between fabrics and affect the fit of the finished garment. Test your chosen fabric before cutting your final version.

Printing and preparation

• Download and open the files on a desktop or laptop computer.
• Use Adobe Acrobat Reader to view and print the PDFs.
• Print at 100% scale / Actual Size.
• Check the test square before printing the complete pattern.
• Assemble the A4 or US Letter pages before using the pattern.
• Complete any pattern alterations and add seam allowances before cutting your fabric.

View printing and assembly instructions

Learn how to use projector files

Who is this block for?

• Fashion designers developing stretch tops and casualwear.
• Pattern makers and garment technicians.
• Fashion-design students and graduates.
• Dressmakers and experienced sewists creating original garments.

Important information

• This is a pattern block or sloper, not a finished sewing pattern.
• Seam allowances are not included.
• Sewing instructions are not included.
• Cutting instructions are not included.
• Basic pattern-making and garment-construction knowledge is required.
• All files and supporting information are in English.

Frequently asked questions

Is this a beginner sewing pattern?

This is a base pattern block for developing your own designs. It does not include a sewing tutorial, so garment-construction knowledge is required.

Can I use woven fabric?

No. This block is designed for knitted and stretch fabrics. Using non-stretch woven fabric will change the intended fit.

Are seam allowances included?

No. Add your preferred seam allowances after completing any pattern alterations.

Can I print the pattern at home?

Yes. A4 and US Letter PDFs are included. An A0 file is also supplied for copy-shop printing.

Is a projector file included?

Yes. A separate protected projector PDF is included for home sewing projectors.

Can I edit this pattern in Adobe Illustrator?

No. This is the printable version. Choose the separately sold editable version for digital pattern editing.

Can I sell garments made using this block?

Yes. You may use the block for personal and commercial garment making. The digital pattern files may not be shared, redistributed or resold.

Need help?

If you have questions about the block or opening and printing your files, contact us and we will be happy to help.

© Basic Pattern Block. For personal and commercial garment making. Redistribution or resale of the digital files is prohibited.