We set thousands of pockets a month. This is how a pocket tee is constructed:
Placement, alignment, and clean sewing and everything that separates a $6 pocket tee from a $26 one.
Lock these specs before you write your tech pack.
01. Placement
Pocket placement and proportion:
Placement is the single biggest driver of whether a pocket looks intentional or accidental.
Same pocket, same fabric, same stitch one looks designed, one looks like a mistake. The difference is where it sits.
Three variables: height, side, and size. Nail all three, and it belongs. Miss one and it doesn’t.
Height: measure from the shoulder, not the collar
Vertical position is measured from the HPS (high point of shoulder) to the pocket’s top edge; the line the eye reads first.
Working range for an adult tee: house spec typ. ~19-23 cm / 7.5-9 in below HPS. Two rules beat the exact number:
- Grade it per size. A pocket 20cm down on a Small can’t sit 20cm down on a 3XL, or it creeps toward the collar. We grade placement across the whole run.
- Reference a body landmark. Cross-check against the armhole and chest line so it sits on the fullest part of the chest.
Side: almost always the wearer’s left
A single chest pocket sits on the wearer’s left by convention.
Break it on purpose, not by accident. Specify the right side or dual pockets explicitly, or the floor will “correct” it back.
Horizontally it lives between center front and armhole, inner edge a fixed distance from CF, so every shirt matches: CF-to-inner-edge spec.
Proportion: size the pocket to the body
A fixed pocket size looks tiny on a 3XL and huge on an XS. Adult pockets run around: ~13-14 cm / 5-5.5 in wide, but the ratio to the chest matters more than the number.
Shape square, tapered, or pointed base is a design choice; lock one in.
02. Grain
Grain and pattern matching:
This is what separates premium pocket tees from the rest. Most brands never spec it. The good ones always do.
Cut the pocket on-grain:
On a knit, straight-of-grain runs vertically down the wales.
A pocket cut on-grain hangs flat. Cut a few degrees off and it twists, curls at the corners, and puckers after the first wash because it shrinks in a different direction than the body under it.
Our pocket pieces are cut with grain matching the front panel. Every time.
Match the pattern so the pocket “disappears”
On a solid, on-grain is enough. On a stripe or print, match the pattern so the pocket blends into the body stripes run continuous, the repeat lines up. We cut the pocket from the panel area right where it’ll sit, so the pattern continues without a jump.
Cost trade-off: pattern matching burns more fabric and marker time; you can’t nest pockets wherever they fit. That’s why matched pockets cost more and why they look expensive.
Spec “pattern-matched pocket” explicitly the default is fabric-efficient cutting, which breaks the match. On directional/napped fabric, spec direction too.
03. Construction
Clean pocket construction:
This is where pockets go wrong on the floor.
Perfect placement plus a puckered, uneven attachment still ruins it.
Three things: crisp edges, even attachment, and no pucker.
Pre-fold and press before anything gets sewn:
The #1 reason pockets look messy: edges get folded while being sewn.
That never comes out even. Fold and press before attachment; the top gets a double-turn hem (no raw edge inside), and the sides and bottom get pressed under to the final shape.
We use a pocket former so every pocket comes out identical. No eyeballing.
Set placement with a jig, not by eye:
Placing pockets by eye across a run guarantees drifts some high, some low, and some tilted. We use a setting jig or template (some lines use a laser) so the pocket lands on the same marks every time. That’s what makes bulk look like the sample.
Attach with an even edge stitch and the right tension:
- Consistent margin from fold to stitch line, held by an edge guide: margin spec.
- Consistent SPI for jersey pocket topstitch, around: ~10-12 SPI.
- Matched thread + ballpoint/stretch needle so it doesn’t cut the loops: thread + needle spec.
Killing pucker: the knit problem
Nobody warns new brands: jersey stretches and a careless pocket puckers.
The two layers feed at different rates, the knit stretches under the foot, and you get a wavy edge after it relaxes.
It’s the #1 defect on incoming samples. How we prevent it:
- Reduced presser-foot pressure and tuned tension so neither layer gets stretched.
- A walking foot / differential feed so both layers move together.
- Light stabilizer on the top hem for very stretchy fabric: when we stabilize, by GSM.
- Pressing after attachment to settle the stitch.
If a sample comes back rippled, that’s the cause and it’s fixable. It’s machine setup, not “how knits are.” Reject the sample.
04. Contrast
Contrast and accent pockets:
A contrast pocket with a different color or fabric from the body is the cheapest way to add a design detail.
It also has one trap that ruins more contrast pockets than anything: shrinkage mismatch.
The shrinkage trap:
Two fabrics almost always shrink by different amounts.
If the pocket shrinks more than the body, it pulls in and puckers after the first wash, passing final inspection, then failing in the customer’s laundry.
Fix it upstream:
- Pre-shrink both fabrics before cutting.
- Match shrinkage behavior, similar composition, and finishing.
- Wash-test the combo before bulk: wash-test protocol / results log.
The color-bleed trap:
High-contrast pairs risk dye migration, a dark body bleeding onto a light pocket in the wash, especially white-on-black or red-on-white.
We wash-test bold combos for bleed and spec dyes that hold the dye-fastness standard.
Weight and hand:
A much heavier or stiffer pocket sits differently and can pull the body forward.
Keep the pocket fabric compatible in weight unless the stiffness is the point.
05. Durability
Reinforcing the pocket opening:
Every patch pocket has two weak points: the top corners of the opening.
Every hand or phone pulls on them. Unreinforced, the stitching gives, the corner lifts, and the pocket peels away.
Bar-tacks at the corners:
The standard fix is a bar tack at each top corner, a dense cluster of tight stitches that locks the corner and takes the load off the top stitch.
Barely visible, but the difference between a pocket that survives a year and one that lifts in a month.
Standard on our functional pockets: bar-tack spec width, stitch count.
Other corner finishes:
- Triangle stitch visible, reads workwear/rugged on purpose.
- Backstitch the minimum; fine for a purely decorative pocket that won’t take load.
06. Intent
Functional vs. decorative pockets:
Answer one question before you speak anything: is this pocket meant to be used or just seen?
It changes the depth, opening, and reinforcement.
Functional pockets:
- Enough depth so contents don’t fall out: functional depth spec.
- Opening wide enough for a hand, not so wide it gapes empty.
- Full reinforcement bar-tacked corners.
- Anti-gape, slight taper, and a well-set hem keep it closed at rest.
Decorative pockets:
- Shallower, nothing goes in it.
- Narrower or a different shape, tuned for looks.
- Backstitched rather than bar-tacked.
- Sometimes sewn shut for a cleaner line.
No right answer, but the floor interprets “make me a pocket tee” differently depending on the assumption. Tell us the intent, and we will build to it.
07. Branding
Decorating a tee that already has a pocket:
A pocket takes prime real estate in the left chest, which is also the most common logo spot. That’s a collision.
Plan decoration and pocket together.
The left-chest conflict
- Move the logo to the right chest pocket, left logo, and right.
- Place the logo above the pocket, if there’s room.
- Brand the pocket itself, often the strongest look.
Branding on the pocket:
- Embroidery goes on before the pocket is attached, while it’s flat and hoopable. After attachment is slow and risky and can stitch the pocket shut: embroidery sequencing note.
- Screen printing on a small seamed pocket is limited to simple mark work; detailed prints usually don’t. A woven label in the seam is often cleaner.
Prints elsewhere:
Back, full-front, and sleeve hits usually clear the pocket; just confirm a full-front graphic doesn’t run under it.
You can’t print through a pocket. If art and pocket overlap, one moves.
08. Spec
Spec checklist for a pocket tee:
Everything above turned into a checklist you can hand to a manufacturer.
Answer all of it and you’ll get a matching sample on the first round instead of burning a sampling cycle on what you forgot to specify.
Tick as you go:
Placement:
- Top-edge height from HPS, specified per size (graded).
- Side wearer’s left/right/dual.
- Horizontal position of CF to pocket inner edge.
Dimensions & shape:
- Width & height, graded across the run.
- Shape square / tapered / pointed base.
Fabric:
- Same as body, or contrast (color, composition, GSM).
- If contrast both pre-shrunk, shrinkage matched, and wash- & bleed-tested.
- Grain direction on-grain, matching body.
- Pattern/stripe match required? (costs more if yes).
Construction:
- Top-hem style (double-turn) & depth.
- Side/bottom edges pre-pressed (pocket former).
- Attachment edge-stitch & margin.
- SPI.
- Thread color/weight (match or contrast).
- Needle type (ballpoint/stretch).
- Anti-pucker handling (walking foot / diff. feed / stabilizer).
Reinforcement & function:
- Corner finish bar-tack / triangle / backstitch.
- Functional or decorative.
- If functional depth, opening width, anti-gape.
Decoration & approval:
- Branding location vs. pocket (right chest / above / on pocket).
- Nobody prints runs under the pocket.
- Washed sample approved before bulk.
From the T-shirt manual
This is one chapter of The Complete T-Shirt Manufacturing Guides:
These chapters cover taking a T-shirt brand from idea to shipped units, costing, sourcing, tech packs, QC, freight, and launch comparisons. All written from the Sialkot factory floor of Gibben Clothing.
On the floor · Sialkot