The Strapfield Convertible PDF Pattern

(4 customer reviews)


The Strapfield is a super versatile design which converts from over the shoulder to backpack in one easy swoop. It’s also super easy to convert from backpack or shoulder bag to a cross body bag too! Sporting loads of pocket options, you can choose from one main Front Slip Pocket or divide it into two, and even add a front Cargo Pocket! Or if you don’t want that many pockets, simply add some stylish trims instead. The front also has a Zipper Pocket. At the back of the bag there is a newly designed Quick Access Phone Pocket. You can also add some Trims to the back if you wish.

The spacious interior closes with a recessed zipper. Inside there is an additional Zipper Pocket. If you are like me and LOVE pockets, you can add Pocket Supplement A for even more pockets! Your purchase of The Strapfield includes TWO sizes. The Small is fantastic for everyday use and the Large is great if you need to carry lots of extras for your kids or when travelling or are just someone who likes to schlep around their kitchen sink!

Both sizes will fit water bottles (depending on size and shape of the water bottle you choose) in the Front Slip Pocket, however for larger or taller water bottles I recommend not dividing the front pocket into two.

Finished size:
SMALL: Approx. 28cm (11”) W X 26.7cm (10 ½”) H X 9cm (3 ½”) D.
LARGE: Approx. 31.8cm (12 ½”) W X 30.5cm (12”) H X 10cm (4”) D.

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The PDF pattern for The Strapfield Convertible has 44 pages of instructions which include 108 step by step colour photos.

The pattern comes with written printing instructions as well as video instructions on downloading, saving and printing for both a PC and Mac.

Pattern pieces (for two sizes) are included for both shaped and rectangular pieces, as well as cutting measurements for rectangular pieces, so you can choose your preferred cutting method. Both Metric and Imperial measurements are included! For your printing convenience, pattern pieces are included as a separate PDF’s to the instructions. All files come in both A4 and Letter sizes for your convenience.

PLUS a TEXT ONLY version of the instructions (11 pages) comes bundled with your pattern for printing purposes. This is great should you not need or wish to print all of the photos! Simply refer to your electronic versions for photos if needed! Saves on ink!

Additional information

Pattern Type


ChrisW Designs


*Exterior Fabric: SMALL – 112cm (44”) wide: 1m (40”) LARGE – 112cm (44”) wide: 1.2m (47”)
*Lining fabric: SMALL -112cm (44”) wide: 75cm (30”) LARGE – 112cm (44”) wide: 1m (39”)
*Fusible Woven Interfacing: WovenFuse – 114cm (45”) Wide – 2 1/4 m (2 ½Yards)
Substitutes are DHJ501 or Pellon Shape-Flex SF101- 51cm (20”) Wide – 3.7m (4 Yards).
*Fusible Fleece (Referred to in pattern only as Fleece) – Thermolam Plus or Vilene H640:
50cm (18”)
*Decovil 1 (Heavy), Peltex 71F, Fast2Fuse or TimTex or 2 layers of Decovil Light (Referred to in pattern only as Decovil 1): 10cm (4”)
*OPTIONAL: 25cm X 25cm (10” X 10”) piece Cork, Leather or Vinyl for Bottom Trims.
*OPTIONAL: 45cm (18”) of piping for the Front Slip Pockets
*1 X #3 Dress Zipper for Interior Zipper Pocket: 25cm (10”) (Or longer cut to size)
*1 X #5 Zipper for Exterior Zipper Pocket: 28cm (11”) (Or longer cut to size)
*1 X #5 Zipper for Top Zipper Closure: 38cm (15”) (Or longer cut to size)
*2 X 25mm (1”) D Ring
*2 X 25mm (1”) Swivel Hook
*4 X 38mm (1 ½”) O Rings
*2 X 25mm (1”) Slider
*1 X #3 Dress Zipper for Interior Zipper Pocket: 30cm (12”) (Or longer cut to size)
*1 X #5 Zipper for Exterior Zipper Pocket: 30cm (12”) (Or longer cut to size)
*1 X #5 Zipper for Top Zipper Closure: 41cm (16”) (Or longer cut to size)
*2 X 3.8cm (1 ½”) D Ring
*2 X 3.8cm (1 ½”) Swivel Hook
*4 X 5cm (2”) O Rings
*2 X 3.8cm (1 ½”) Slider
Both Sizes:
*1 X Metal Zipper End
*1 X 18mm (¾”) Magnetic Snap (Regular or Low Profile as desired) Optional for Cargo Pocket.
*12 X Double Capped Rivets 6mm – 9mm (Stem) (Stem size is a guide only and may vary depending on thicknesses. I use 6mm, 8mm and 9mm sizes for this bag depending on materials used)
NOTE: You can try Chicago Screws as a substitute if rivets scare you!

Other Items:
Double Sided Wonder Tape (or Glue suitable for glue basting – I use Elmer’s Washable School Glue), Tailors Chalk or Fading Marker, Fray Stopper, Hole Punches, Rivet Setting Tools, plus general sewing items.

4 reviews for The Strapfield Convertible PDF Pattern

  1. TANYA DAVIS (verified owner)

    Terrific pattern! I love this pattern and how the directions are so well written. You can’t go wrong with any ChrisW design but this one is top notch. This is my current carry. Give it a go. You won’t be disappointed!

  2. Anj Harper

    This is a super bag, made it in 2021. Brilliant instructions as usual.

  3. Élisabeth G. (verified owner)

    Superbe sac, dimensions idéales à mon goût !
    Instructions très détaillées, et très compréhensibles grâce à Google Translate et un peu de réflexion !
    Dommage que je ne puisse pas joindre de photo avec mon commentaire !

  4. Wendy (verified owner)

    I just made this one this summer for myself and I will made it again! It has so many cool features and the instructions are the best, as are all of Chris’s patterns.

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