Strong, smooth, and endlessly reliable — the thread your machine loves, in the weights your projects need.
Aerofil Polyester Thread
Made from 100% premium core-spun polyester for exceptional strength and consistent tension — Aerofil glides through your machine with low-lint, colorfast stitches that stay crisp wash after wash, on everything from fine garments to heavy quilts.
Which Aerofil is Right for You?
Aerofil 120 — 40 wt
Aerofil 120 is your everyday workhorse. Perfect for piecing, machine quilting, garment construction, and serging. Start here for all-purpose sewing.
Aerofil 35 — 12 wt (Extra Strong)
Aerofil 35 is super strong and made to stand out. Ideal for bold topstitching, hand quilting, and decorative seams where strength and contrast matter.
Shop Aerofil
ALL-PURPOSE SEWING
Aerofil
"For me, seam construction within my garment sewing is something that is important, good quality thread is invaluable. That's why my thread of choice is always a Madeira thread. My favourite is the Aerofil. I am on a journey to not only sew my dream wardrobe but teach others too. I want to make clothes to last and making sure the seams are sewn with this thread helps that massively."
Aerofil Assortment Cases
Our Flat Rate Shipping
For orders shipped in the continental United States.
FREE
For orders totaling
more than $64.99
$5.95
For orders totaling
less than $34.99
$12.95
For orders totaling
less than $64.99
Frequently Asked Questions
What is Aerofil thread?
Aerofil is Madeira’s premium 100% core-spun polyester thread, known for its strength, flexibility, and smooth stitching. Its matte, cotton-like finish blends naturally into your fabric, while the core-spun construction delivers consistent tension and clean, low-lint stitches — on light and heavy fabrics alike.
Features & benefits
- Core-spun strength — exceptional, consistent tension and durable seams.
- Lint-free stitching — runs clean without snagging or shedding, even at high speeds.
- Fade-resistant color — colorfast and vibrant, staying true wash after wash.
- Smooth performance — glides through high-speed machines for even stitches and crisp results.
- Machine washable — with dual thread locks to keep spools tidy in storage.
Specifications
- Fiber: 100% premium core-spun polyester
- Weights: 40 wt (No. 120) & 12 wt (No. 35 Extra Strong)
- Finish: Matte, cotton-like
- Spool sizes: 440 yd (400 m) and 1100 yd (1000 m); Aerofil 35 in 110 yd
- Recommended needles: Universal 80/12 or Topstitch 90/14
- Machine compatibility: Domestic, longarm, and serger
What is Aerofil best used for?
- Piecing & construction — strong, consistent seams
- Machine quilting — smooth, low-lint stitching through all layers
- Serging & overlocking — reliable at high speed
- Topstitching & decorative work — especially bold in 12 wt
Tips for sewing with Aerofil
- Use a Universal 80/12 or Topstitch 90/14 needle.
- Keep a consistent sewing speed for balanced tension.
- Pair with a fine polyester or pre-wound bobbin.
- Store with the dual thread locks engaged to prevent unwinding and tangles.
Shipping & returns
- Continental US flat rates: $5.95 (orders under $34.99), $12.95 (under $64.99), FREE over $64.99.
- Shipping, taxes, and discount codes are calculated at checkout.
- See our Refund Policy and Shipping Policy for returns.
Have Questions?
We're Here To Help
Unsure which thread is right for your project or need expert advice, don't hesitate to reach out.
Email us anytime or start a live chat — our team of sewing and quilting specialists is ready to assist.