Merchant & Mills : The Thelma Coverall Boilersuit Pattern
A traditional workwear boilersuit with a gentle fit.
Thelma is a wardrobe masterpiece that can be interpreted in many different types of cloths, so make it your own.
Thelma will take time to put together, but make it well and wear it absolutely everywhere.
Skill Level: Experienced
Sizes: This is a multi-size paper pattern that comes in two size ranges, please ensure your selection reflects desired fit.
*See images for more sizing information and fabric requirements.
Suggested Fabrics: medium weight wovens such as sanded twill, 5 – 8oz denims, yard dyed linens with some stability, and cotton poplin. If you are an experienced sewer you could try tencel, tencel/linen, corduroy, more floppy linens, prints and checks.
Additional Supplies:
- 18 x 14-18mm Buttons (only 16 buttons if you intend on just using one button at the cuff)
- 2 x Matching thread
- 70cm Interfacing
All seam allowances are 1.5cm unless stated otherwise and are included in the pattern.
Pattern Errata:
Front leg (4) it says on the pattern piece ‘cut here for right side’ should say ‘left’. However the instructions are correct.
The tack on the under arm sleeve (at the cuff) the sizing is the wrong way round.
Merchant & Mills
Merchant & Mills is a UK-based company celebrated for its beautifully curated range of high-quality fabrics, sewing patterns, and expertly crafted notions. Founded in Rye, East Sussex, Merchant & Mills champions a minimalist and functional approach to garment making, emphasizing timeless style and craftsmanship. Known for its thoughtfully designed patterns and sustainable fabric collections, the brand empowers makers with tools and materials to create durable, elegant, and practical clothing. Whether you’re a beginner or a seasoned sewist, Merchant & Mills inspires creativity with an ethos of quality and simplicity.
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