Sewzy
Crescent Sling Bag Sewing Pattern
The Crescent Sling Bag is an intermediate sewing pattern in 3 sizes, Mini to Large. It takes about 2 hours in 9 written steps. It is in the Sewzy iPhone app with every size included. Print it as a letter-size PDF or an A0 copy-shop file.
Updated October 29, 2026
- Level
- Intermediate
- Time
- About 2 h
- Sizes
- 3
- Steps
- 9
The Crescent Sling Bag pattern comes in 3 sizes, Mini to Large. It is an intermediate project that takes about 2 h, in 9 steps. Best fabrics: mid-weight cotton canvas, denim, cork fabric or vegan leather.
Premium Print the letter or A0 PDF from the app.
Photos are renders of the finished item, made from this pattern's shapes.
Sizes and fabric
| Size | Finished size and details | Fabric |
|---|---|---|
| Mini | 10 x 6 x 1¾ in | Outer 1½ yd · lining ⅜ yd |
| Everyday | 13 x 7¼ x 2¼ in | Outer 1⅝ yd · lining ½ yd |
| Large | 16 x 8¾ x 3 in | Outer 1⅝ yd · lining ½ yd |
Outer: mid-weight cotton canvas, denim, cork fabric or vegan leather. Lining: quilting cotton or poplin. A layer of fusible fleece or foam stabilizer behind the outer panels gives extra body (optional).
You also need
- 1 in slider + 2 x 1 in D-rings or rectangle rings (adjustable strap), or skip these for the plain-strap variation
- 1 in webbing, cut length in the size table
- Zipper, nylon coil, length in the size table
- Thread, clips, 90/14 needle
Pattern pieces
Crescent panel (cut 2 outer + 2 lining on fold)
Seam allowance: ⅜ in (1 cm) included. The fold edge (bag center) has none.
The steps
The written guide in the app takes you through 9 steps, one at a time.
- Cut
- Mark
- Lining pocket
- Install the zipper
- Gusset the outer bag
- Gusset the lining
- Strap
- Join outer and lining
- Turn and finish
Watch how it's done
Short tutorials on YouTube for the techniques in this pattern, by other sewists. They are not made by Sewzy.
- How to Sew Zippers on Any Bag: 4 Methods from Flat to Recessed Zipper Sewingly Carol · Installing the zipper in step 4
- How to Sew a Gusset with Ease! Pro Tips for a Perfect Finish Andrie Designs · The gusset seam in steps 5-6
- I Sewed the Ultimate Crescent Crossbody Bag! DIY Sling Bag with Zipper & Inner Pockets sewingtimes · Crescent crossbody bag
More bags and accessories
Questions about the Crescent Sling Bag
How much fabric does the Crescent Sling Bag need?
Best fabrics: mid-weight cotton canvas, denim, cork fabric or vegan leather. Exact amounts for each size are in the guide inside the Sewzy app.
Which sizes does the Crescent Sling Bag come in?
It comes in 3 sizes, Mini to Large. The size table on this page lists what each size fits.
How long does the Crescent Sling Bag take to sew?
About 2 hours. It is rated intermediate, and the written guide in the app has 9 steps.
Related guides
How to sew a tote bag with boxed corners (step by step)6 min readSew a lined tote bag with boxed corners in about 90 minutes. Cut sizes, seam allowance, strap length and the boxed corner trick, explained for beginners.
How much fabric do I need? A simple yardage guide4 min readHow much fabric do I need? Learn how to read fabric width, plan a cutting layout, add extra for shrinkage and matching, and work out yardage for any project.
Seam allowance explained: ¼, ⅜, ½ and ⅝ inch5 min readSeam allowance is the fabric between the cut edge and your stitching line. Learn the common amounts, how to sew a straight one and when to trim.
Sew the Crescent Sling Bag in Sewzy
Every size is included. Premium opens all 100 patterns and starts with a 3-day free trial.
Free to download
Premium starts with a 3-day free trial. Cancel any time in iOS Settings. Prices in USD.