Thread Theory Men’s Comox Trunks

Thread Theory


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Buy the Men’s Comox Trunks sewing pattern from Thread Theory. These form-fitting trunks are designed with comfort in mind. No centre back seam, a reinforced inseam gusset and a shaped front cup make these boxers fit like a second skin without the worry of rubbing or shifting. Short athletic legs and a smooth elastic waistband create a streamlined silhouette that can be worn under everything from slim fit pants to gym shorts.

This sewing pattern is available to buy in the following formats:

– PAPER (next working day dispatch on orders and FREE UK delivery over £50)

– PDF (available to download immediately after purchase). What is a PDF?

– PDF pattern + Printed A0 copy shop (We print out the A0 pattern sheets, but you’ll need to download the digital instructions, as we don’t print these. The PDF files will be emailed immediately after purchase, and the A0 pattern sheets will be dispatched next working day). What is Copy Shop?

Suggested fabrics: Cotton, bamboo, or blended lightweight knit with (preferably) at least 4% spandex/elastane and four-way stretch. The knit you choose should have 60 – 70% stretch. For sporty, versatile trunks, choose a lighter weight knit. For thicker, cosier trunks, choose a heavier T-shirt weight knit. Avoid tissue weight knits as these will not be strong enough.

Fabric requirements: 115 cm (45″) wide fabric: 0.8 – 1.0 m (0.9 – 1.1 yd) // 150 cm (60″) wide fabric: 0.6 m – 0.9 m (0.7 – 1.0 yd).

Sizing: Waist 24″ – 45″. Please check the designer’s size chart and finished garment measurements.

Notions: Elastic waistband (1 1/2″ – 1 3/4″ wide).

PDF pattern includes: Step-by-step instructions; US letter/A4 print-at-home pattern (8 pages for sizes 24-36, 10 pages for sizes 39-45); 36″ wide roll feed copy shop pattern (1 sheet for sizes 24-36, 1 sheet for sizes 39-45); A0 copy shop pattern (1 sheet for sizes 24-36, 1 sheet for sizes 39-45) // Layers: Yes // Projector file: Yes.

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Additional information



Sewing level

Confident Beginner

Make time

Half a day

Pattern format

PAPER, PDF, PDF pattern + Printed copy shop (+£7.00)

PDF Printing

10 pages (sizes 39-45), 8 pages (sizes 24-36)

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