Gorpcore · relaxed straight, articulated

Convertible Zip-Off Trail Pant

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Pro
180 GSM stretch ripstop, 42 cm waist, 30 cm front rise, 74 cm inseam, 24 cm leg opening, zip-off line 42 cm above hem, cargo pockets, drawcord hems
SwitchbackConvert — Convertible Zip-Off Trail Pant (front) gorpcore convertible zip-off trail pant flat sketch template front view tech pack vector drawing zip-off leg line A waist 42 C rise 30 H inseam 74 G leg opening 24 B hip 56
FRONT
SwitchbackConvert — Convertible Zip-Off Trail Pant (back) gorpcore convertible zip-off trail pant flat sketch template back view tech pack vector drawing
BACK
Starting spec — make a sample before you order in bulk.
New to tech packs? Read how to make one, step by step →

Fabric

180
GSM · Midweight · range 160210
Stretch ripstop88% recycled nylon / 12% elastane. PFC-free DWR; ripstop grid every 6 mm
Trim: Pocket mesh · 100% polyester tricot mesh · 90 GSM
What does GSM mean? Read the fabric weight guide →

How it's made

Waistband
Elastic-backed with flat drawcord · height: 4 cm · closure: Zip fly with one bar-tacked tab
Shoulder
N/a shoulder
Zip off
height from hem: 42 cm · detail: #3 coil zip around each leg, 2 cm above the knee crease; tonal binding on both raw edges so the shorts read finished
Sleeve hem
n/a
Body hem
2.5 cm elastic drawcord channel with cord stopper. Level hems; cord exits at the outseam
Pockets
Two slash hand pockets; two bellows cargo pockets with flaps (wearer's right flap carries a 6 cm hook-and-loop closure); one zipped back pocket
Side seams
4-thread overlock + 0.6 cm topstitch, bar-tacked at pocket corners
Stitch density spi
12 stitches per inch

Size chart

Garment laid flat · M is the sample size
Measure
XS
S
M
L
XL
XXL
A
Waist width (flat, relaxed) ± 1 cm
38
40
42
44
46
48
B
Hip width (flat, 20 cm below waist) ± 1 cm
51
53.5
56
58.5
61
63.5
C
Front rise (waist seam to crotch) ± 0.5 cm
28
29
30
31
32
33
D
Back rise (waist seam to crotch) ± 0.5 cm
38
39
40
41
42
43
G
Leg opening (flat, relaxed) ± 0.5 cm
23
23.5
24
24.5
25
25.5
H
Inseam ± 1 cm
71
72.5
74
75.5
77
78.5
I
Waistband height ± 0.3 cm
4
4
4
4
4
4
Make a shopper size chart from this template (PNG or Shopify) →Sample back from the factory? Check it against this tech pack →

Colourways

Slate Grey
#6E7379
Dark Olive
#4E5340
Bone
#DDD6C6

Trims & notes

#3 coil zips 62 cm (x2, leg separation)
#3 coil zip 15 cm (back pocket)
#5 zip 14 cm (fly)
Flat drawcord 3 mm + cord stoppers (waist and both hems)
Hook-and-loop 6 cm (cargo flap)
Woven label (back waistband)
The zip-off line sits 42 cm above the hem so the shorts land just above the knee — measure it on a fit model, not on the flat, because rise differences move it.
Bind both cut edges at the zip line. An unbound zip-off is the single most common reason these get returned.
Ripstop needs a 70/10 microtex needle; a blunt needle pulls the grid and shows as puckering.