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DIY Triangle Denim Bag in Just 15 Minutes!

I’m officially obsessed with this DIY triangle denim bag. It’s so simple that I finished it while my coffee was still hot! If you’ve got some denim scraps lying around and want a quick win, this 15-minute project is calling your name. Let’s skip the stress and make something cute together!

The interior view of a denim triangle bag showing a striped fabric lining and a white smartphone inside to demonstrate its storage capacity.
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A person holding a handmade blue denim triangle bag with a minimalist white label, showcasing the unique geometric design and scale.

The finished measurements of this bag are approximately 11⅞″(30㎝) W × 6″(15㎝) H × 4″(10㎝) D.

You may watch the full video tutorial on my Youtube channel.

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Seam allowances are 3/8″ unless otherwise specified.

Let's get started!!

To make this you will need:

◆ Main panel
② 17″ × 14⅝″ (43㎝ × 37㎝) Outer layer
② 17″ × 14⅝″ (43㎝ × 37㎝) Lining
◆ Strip
② 3/4″ × 8″ (2㎝ × 20㎝) Outer layer

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Fold the strip pieces in half, wrong sides together to make a crease. Then fold each edge in toward the middle and press. Stitch along edges of the strip.

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Place the strip on the right side of the outer and sew.
Place the right sides together of the outer and lining and sew U shape in the center.

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With sharp scissors make small snips on the seams. Turn them right side out. Press, pin and top stitch the edges.

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Flip the layers so the outer bag pieces are right sides together, and the lining pieces are right sides together. Sew both sides and bottom with an allowance of about 3/8″, leaving an opening on the lining.

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Combine the seams so that a flat base is formed. Sew with an allowance of about 3/8″.

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Sew up the opening and arrange the lining inside.

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Fold the handle over and sew with the right sides facing each other.

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YOU ARE FINISHED!

Hope you enjoyed this tutorial! Feel free to explore more posts.