Verified Open Pattern (1.0.0-published)

This pattern includes verified home printable specification files, dual-unit sizing charts, and full cutting guides. License: Drafted by Threadline Patterns. CC BY-SA 4.0 International..

Knit Top Beginner XS to 3XL (Bust 80–132 cm / 31.5"–52.0")

Breton Striped Boatneck Top

The Breton Boatneck Top is a timeless European style icon. Featuring an authentic wide bateau neckline that elegantly grazes the collarbones, classic 3/4 sleeves, clean-finish side seam hem vents, and a relaxed boxy fit engineered specifically for horizontal yarn-dyed stripes.

Jump to Downloads Front & Back Views Size & Measurements Fabric & Tools Step-by-Step Instructions

Technical Garment Schematics

Front and back flats illustrating seam lines, hem curves, and design details.

Front Elevation

Back Elevation

Sizing & Measurement Tables

Review both body benchmarks and finished garment ease before cutting your cloth.

Measurement Unit

Toggle between metric and imperial values across all charts

1. Body Measurements Chart

Your physical body dimensions. Measure over undergarments with a snug tape.

Swipe sizes

Size	Bust	Waist	Hip
XS	80 cm	62 cm	88 cm
S	86 cm	68 cm	94 cm
M	94 cm	76 cm	102 cm
L	102 cm	84 cm	110 cm
XL	112 cm	94 cm	120 cm
2XL	122 cm	104 cm	130 cm
3XL	132 cm	116 cm	142 cm

2. Finished Garment Measurements Chart

Dimensions of the sewn garment, including designed wearing ease.

Swipe sizes

Size	Finished Bust	Finished Length	Bottom Hem
XS	88 cm	60 cm	92 cm
S	94 cm	61.5 cm	98 cm
M	102 cm	63 cm	106 cm
L	110 cm	64.5 cm	114 cm
XL	120 cm	66 cm	124 cm
2XL	130 cm	67.5 cm	134 cm
3XL	140 cm	69 cm	144 cm

Size Selection Guidance

Provides 8 cm (3.1") of comfortable positive ease. If sewing with stripes, match stripes at underarm notches.

Wearing Ease Explanation

Nautical straight cut with +8 cm (+3.1") bust ease and side vents.

Fabric & Materials

Recommended substrates, stretch allowances, yardage requirements, and required notions.

Recommended Fabrics

Midweight stable cotton jersey or interlock

Yarn-dyed striped cotton jersey (210–250 gsm)
French sailor cotton interlock knit for authentic structured hand
Organic cotton jersey with gentle stretch

Stretch Requirement: 25–35% crosswise stretch with stable recovery

Notions & Sewing Tools

Ensure you have these ready before starting.

Notions:

Ballpoint sewing needle (size 80/12)
Matching thread
Clear elastic for shoulder seam reinforcement

Tools Required:

Sewing machine with walking foot or serger
Wonder clips to match stripe lines

Fabric Yardage Requirements

Size Bracket	115 cm (45") Width	150 cm (60") Width
XS – M	1.6 m (1.8 yd)	1.3 m (1.4 yd)
L – XL	1.9 m (2.1 yd)	1.5 m (1.6 yd)
2XL – 3XL	2.2 m (2.4 yd)	1.7 m (1.9 yd)

Seam Allowances & Cutting Layout

Exact seam allowances included in pattern lines, piece list, and cutting discipline.

Standard Seams

1.0 cm (3/8 in) included.

Hem Allowance

2.5 cm (1 in) hem allowance.

Neck & Armhole

1.0 cm (3/8 in) turned-down facing.

Pattern Pieces to Cut

Piece Name	Quantity & Orientation	Grainline / Cutting Notes
Front Bodice on Fold	Cut 1 on fold	Straight of grain
Back Bodice on Fold	Cut 1 on fold	Straight of grain
3/4 Sleeve	Cut 1 pair	Straight of grain
Neckline Facing Strips	Cut 2	Straight of grain

Fabric Cutting Checklist:

Carefully pin stripes at selvages so horizontal stripes match across side seams.

Printable Pattern Files

Download PDF files for home printing on standard desktop printers.

Download Pattern Files

1.0.0

Direct pattern downloads. No registration, email capture, or paywalls required.

Updated: 2026-03-01

Instructions Available

Complete offline sewing guidebook with dual calibration test squares, yardage charts, pattern piece cut list, numbered steps, and troubleshooting.

13.9 KB • 4 pages

Download (13.9 KB)

A4 Available

Full-scale 1:1 tiled master pattern for A4 paper (17 sheets). Includes dual 50mm/2.0in calibration boxes, assembly map, grainlines, and corner registration crosshairs.

108.7 KB • 17 pages

Download (108.7 KB)

US Letter Available

Full-scale 1:1 tiled master pattern for US Letter paper (19 sheets). Includes dual 50mm/2.0in calibration boxes, assembly map, grainlines, and corner registration crosshairs.

122.4 KB • 19 pages

Download (122.4 KB)

Printer Calibration Test Sheet (Free Single Sheet) 2.4 KB

Print at 100% scale (no fit-to-page) and measure the 50mm and 2-inch test boxes with a hard ruler.

Download Test Sheet

Print Instructions:

Open the downloaded PDF in Adobe Acrobat Reader or a dedicated desktop PDF viewer. In the print dialog, select "Actual Size" or "Custom Scale: 100%". Never select "Fit to Printable Area". Always measure the calibration square on Page 1 before proceeding.

These files are prepared from documented pattern references through a technical drafting workflow. If anything appears incorrect, unclear, or causes a sewing problem, email feedbacksewingpattern@gmail.com. Send pattern feedback.

100% Scale Verification

Print Page 1 at 100% scale without scaling. Check 50 mm (Metric) or 2.0 in [50.8 mm] (Imperial) test square with a hard ruler.

Read full printing & calibration guide →

Tile Assembly Instructions

Align numbered letter and row marks. Butt edges together without overlapping untrimmed paper.

Step-by-Step Sewing Instructions

Draft construction notes. Readable online; review against the pattern pieces before sewing.

Finish Boatneck Edge

Apply Neckline Facing Strips to Front Bodice on Fold and Back Bodice on Fold neckline edges right sides together. Turn under and topstitch with twin needle. Press seam allowances flat.

Shoulder Seams

Align Front Bodice on Fold and Back Bodice on Fold right sides together. Stitch short shoulder seams with clear elastic reinforcement. Press seam allowances open.

Insert 3/4 Sleeves Flat

Insert 3/4 sleeves flat into armholes right sides together, matching stripes at sleeve cap notches. Stitch with stretch stitch.

Side Seams with Vents & Hem

Align front and back bodices right sides together. Stitch side seams stopping 6 cm above hem for side vents. Press seam allowances. Twin needle hem sleeves, side vents, and bottom edge.