Materials for each size:
For each size we will need:
▫️ 2 O-rings for the strap attachments, I use 1.5" diameter, the 1" or 1.25" diameters will work too,
▫️ one buckle of 3/4" (2cm) or the width you'd like for your bag, for the XL size I used 1.5” (38mm)
▫️ 2 lobster hooks - optional, only if you want to make the strap detachable,
▫️ belt leather strap of about 55" (140cm) — “about” because you can measure yourself and pick exactly the length you need, 55" works great for ~5'4" (160-165cm)
▫️ 13-15 rivets to attach the strap and for zip pullers, to have a few more just in case would be great too.
▫️outside zip pocket length: 11”(28cm)
▫️inside zip pocket length: 10” (25cm)
S size:
▫️ Leather for the body: about 2.5-3sq.feet
▫️fabric for the lining: about 25” (64cm) of the standard width 44.5” (113cm) for the full set of pockets: slide pockets and 1 zip pocket inside and 1 outside zip pocket on the back.
▫️top zipper length 11.5” (28.5cm)
M size (the original, the very first size we had):
▫️ Leather for the body: a piece of 15" H x 30" L (38x76cm) or about 4.5 square feet,
▫️fabric for the lining: 3/4 yard of fabric for the lining (68cm) of the standard width 44.5” (113cm) for the full set of pockets: slide pockets and 1 zip pocket inside and 1 outside zip pocket on the back.
▫️top zipper length 1 zipper of 13" (33cm)
L iPad size:
▫️ Leather for the body:
Vertical layout: a piece of 15” H x 25.5” L (27.5” L if you want to make leather frames for the inside pockets) or 38x65cm
Horizontal layout: 14” H x 31.5” L (35.5x80cm), or about 5.5-6 sq. feet
▫️fabric for the lining: 1 yard of the standard width 44.5” (113cm) for the full set of pockets: slide pockets and 1 zip pocket inside and 1 outside zip pocket on the back.
▫️top zipper length 14” (35.5-36cm)
▫️outside zip pocket: 11”(28cm) — if you want you can make the outside zipper on the back longer, in this case simply extend the pocket cut on the pattern and take +1” for the zipper (2.5cm)
XL Laptop size:
▫️leather for the body:
Vertical layout: a piece of 17” H x 28” L (30” L if you want to make leather frames for the inside pockets) or 43x76cm
Horizontal layout: 15” H x 34” L (38x86.5cm), or about 6 sq. feet. The backside detail is the largest and it’s 13” H x 17” L, just make sure it’ll fit in the piece you have.
▫️fabric for the lining: 1 yard (30” actually will be already ok or 76cm) of the standard width 44.5” (113cm) for the full set of pockets: slide pockets and 1 zip pocket inside and 1 outside zip pocket on the back.
▫️top zipper length 15.25” (39cm) is perfect, 15”(38cm)will work too.
▫️outside zip pocket: 11”(28cm) — if you want you can make the outside zipper on the back longer, in this case simply extend the pocket cut on the pattern and take +1” for the zipper (2.5cm)