How to Sew a Flat Felled Seam (Flat Fell Seam)

Looking to find a seam that is strong and durable? The flat felled seam, or felled seam, is just what is needed. This is the preferred seam in jeans, denim jackets, and other casual garments that get rough and tough wear.

A flat felled seam is commonly seen on sportswear and menswear. It is a strong flat seam that will not fray. This tutorial will show how to make a flat felled seam, commonly seen on jeans and denim jackets, that has two rows of stitches on the right side of the fabric.

What is a flat felled seam?
The felled seam, or flat-fell seam, is a seam made by placing one edge inside a folded edge of fabric, then stitching the fold down. The fold encases the raw edges and protects them from fraying.

The fold is secured with edgestitching. It is useful for keeping seam allowances flat and covering raw edges, along with providing a strong and durable seam.

This quick and no-frills or extra talking video will have you sewing a flat fell seam in less than 3 minutes!

Enjoy this flat-felled seam tutorial!

For a written, photo tutorial for the flat-felled seam, please visit our page:

For many other seam Hemming and Finishing Techniques visit this link:

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[Needlepointers]

Hello Alisha,

If you make a mock flat felled seam, you can use twin needles to stitch. For a mock flat felled seam, you would sew a plain 5/8" seam with right sides of fabric together. Press both the seam allowances to one side and serge or zigzag the seam allowance to give it a finished look. From the project outside (right side), you can use twin needles to stitch two parallel lines anchoring the seam allowance.

[peanutandgaga]

thank you, I was pulling my hair out trying to remember this seam from my college days...I was going crazy!!! you have made EVERYTHING clear again. thank you.gail. (u.k)

[sharonmac]

OMG thank you! short and simple. My teacher will be so proud of me for doing my homework on time and at home LOL

[trinialisha]

This is one of the "Best" if not the best sewing tutorial I have seen on YouTube. The camera positioning, lighting, fabric with contrasting thread and your clear, yet to-the-point explanations is truly applaudable.
QUESTION: is there another method using a twin needle?
Thank you, wishing you continued success.

[musclelimit]

concise and to the point. Lovely tutorial with no waffle. Thank you

[lholley]

Thank you, thank you, I've a split king Sleep Number bed and used this stitch to sew two Twin XL top sheets together for my "king" top sheet.  Perfect...I'm impressed with myself.  Thanks for taking time to provide this tutorial, very well done, easy to follow, professional and concise.

[karenlam]

Thank you very much for these simple and clear instructions!

[bklynkitty]

oh, thank you! Such a clear and helpful tutorial!

[Needlepointers]

Glad to help you finish your homework on time!  If you like our videos, please share, like and subscribe!

[trinialisha]

Thank you I will be letting you know how it came out.

[angel]

Thank you for posting in video I can actually see clearly! :)

[jonrob]

Thank you so much! That was very helpful and easy to follow!!! :-)

[RONNIEJNZN]

Hello, great video, thank you. I understand the seam but when it's used on a sleeve is it possible to for it to be the only seam ? I looking to sew a drysuit for kayaking out of waterproof material . I want to sew the first step of the flat felled seam and then put "shoe goo" for waterproofing in the seam fold before sewing the second step. I'm planning on using raglan style sleeves. I want as few seams as possible. Do flat felled seams on a sleeve or pant leg always need another seam on the opposite side ? What are the options for a second equally strong ( and sealable ) seam as the other seam ? Would I be better off sewing those single seams by hand ? Thank you for your time.

[gkmmn]

Thanks, i can't find a video to show how to get the factory humpy look on the outside of a pair of Levis legs. They all look like Amish made pants without the humpy look. Can you address this? thanks

[maxcohen]

Nice video, but most of my jeans with this seam have them on the outer and the inseam. How can I sew this on both sides of the legs?

[smasm]

رائع

[knittysong]

Can you use a wide hemmer foot to get an extra straight second seam?

[fredhubbard]

Can you make more of these fast and direct videos? I have started late in life, and don't have time to sit and watch people blabber, and pin and iron.