Jersey shadow box: how to fold, pin and frame a shirt

To frame a jersey in a shadow box, slide a padded board inside it so that it keeps its shape, fold the sleeves, and fix it to a fabric-covered backing with stitches or stainless steel pins through the seams. Leave a gap between the cloth and the glass, and hang the box out of the sun. Use no glue, tape, staples or spray on the shirt: they are the things that cannot be undone.

The stitching follows the method the Canadian Conservation Institute (CCI), a Canadian government agency, publishes for mounting small flat textiles. The padded insert, the layouts and the pins left in place are practical framing advice built on the same rules, not a published museum method. Where this guide says what harms fabric, the source is CCI, which publishes its museum guidance for anyone to use.

Size the box from the shirt

Do not buy or build the box first. Lay the jersey flat, arrange it the way you want it seen, and measure that.

Layout	What it shows	Measure
Sleeves folded behind	The front panel: crest, sponsor, number	Chest width by collar-to-hem length
Sleeves folded forward at an angle	Front plus sleeve patches	Widest point across the folded sleeves by length
Back facing out	Name and number	Chest width by collar-to-hem length
Sleeves out flat	The whole shirt	Cuff to cuff by length. This is a very wide box

Add at least 50 mm of clear backing on every side. A shirt that measures 55 × 75 cm as you have laid it out needs a box at least 65 × 85 cm inside. Sizes vary a good deal, so measure yours.

For depth, measure the shirt once it is padded, usually about 20 mm, and add 10 mm so that it does not touch the glass: 30 to 40 mm inside is the usual answer. How to make a shadow box covers building a box to a size, or deepening a picture frame.

Should you wash it first?

CCI’s rule for museum textiles is that “textiles should be cleaned before they are mounted and framed”, and that a soiled textile “should not be mounted” until a textile conservator has advised. For most textiles it means cleaning the surface, not a machine wash. A shirt framed unwashed goes against that rule, and the choice is yours to make knowing the cost.

A signed shirt: no. The signature is ink. If it runs or lifts in the wash it cannot be put back.
A match-worn shirt you want kept as it left the pitch: no, if the marks are the point. CCI’s note on textiles and the environment says that oils, stains and “soils from use can oxidize and become set over time, causing disfigurement, weakening and breakage of fibres”, and that some soils feed mould and insects. Let it dry completely before it goes behind glass.
Any other shirt: yes. As practical advice for a modern shirt, wash it, dry it fully and press it lightly through a cloth, keeping the iron off printed numbers and badges.

Do not use starch, fabric stiffener or any spray to make it sit flat. CCI’s list of things that should never touch a textile being framed includes “sprays of any kind”.

Make the insert

The insert is a board inside the shirt that gives it a flat, even shape, so that the cloth is supported everywhere and not stretched from a few points.

Cut acid-free matboard or acid-free foam board to the outline of the body: straight sides, sloped shoulders, a shallow curve for the neck. Make it 10 to 15 mm narrower than the shirt so that the side seams wrap round its edges.
Lay a sheet of polyester batting over the front of the board and trim it flush. It rounds the hard edges and gives the front a slight fullness.
Slide the board in through the hem, batting to the front, until the shoulders seat. Smooth the cloth outwards from the centre.
Fold the sleeves behind the board, or forward across the chest, and the hem under if the shirt is longer than the box.

The materials are from CCI’s list of what is safe against textiles in a frame: acid-free matboard, acid-free foam board, and polyester felt or batting.

Prepare the backing

Use foam board or matboard cut to the inside of the box, covered in washed cotton, linen or polyester cloth. Wrap the cloth round and glue it at the back of the board only. CCI’s instructions for this step are to keep the glue “away from the edges and the front of the support” and to let it “cure and off-gas completely” before the frame is sealed.

Plain black or a team colour is the usual choice. CCI asks that coloured backing cloth be tested for dye that runs, because “moisture or accidental wetting could cause a transfer of colour”. A simple check is to wet a corner and press it on white paper.

Fix the jersey to the backing

Stitching, the conservator’s way

CCI’s note on mounting small, light, flat textiles pins the piece in place first, then stitches the edge to the covered board and takes the pins out as the stitching goes round. For a shirt:

Place the padded shirt on the backing and pin it at the shoulders, sides and hem.
With cotton or polyester-and-cotton thread in the shirt’s colour, take small stitches through the seam allowances: along both shoulder seams, down both side seams and across the hem. Go through the covering cloth of the backing and, where you can, between the loops of the knit, not through the yarn.
Add a few stitches at the collar and at each sleeve fold.
Stand the board upright. If any part sags or puckers, add a stitch there.

Keep the thread relaxed. CCI’s note on stitches warns that tension “causes buckling or gathering, which can break old threads”, and asks for “as few stitches as possible”.

Pinning

Pins are faster, but leaving them in is a short cut, not the conservator’s method: CCI’s note takes its pins out as the stitching goes round, and its framing note lists “staples, tacks, nails” among the things that should never touch a textile. For a shirt that cannot be replaced, stitch. For a shirt in sound condition, pins hold well if you follow these rules, which are our advice drawn from those notes.

Use stainless steel pins. CCI records old textiles “staining as the metal tacks corroded”. It names no pin; stainless steel is the practical choice because it resists rust.
Pin through seams and hems only, where a hole will never show, and slip the point between the knit loops. Never pin through a number, a badge or a signature.
Angle each pin downwards into the foam board so that the weight seats it.
Space them every few centimetres along the shoulders and sides. Many pins carrying a little each is the aim.

Why not just hang it on a hanger?

A hanger in the box looks natural, but it puts the whole weight of the shirt on two narrow strips of the shoulders. A jersey is a knit, and knits stretch. CCI’s note on hanging costumes says plainly: “avoid hanging knits”. If you want a hanger for the look, put it in, and still support the shirt with the insert and the stitches so that the hanger carries nothing.

Glass, gap and seal

Keep a gap. CCI’s framing note says spacers stop the cloth being crushed and reduce “the risk of moisture condensing on the glazing” against the textile.
Glass or acrylic. The same note sums up the choice: “glass is heavier than plastic and breaks more easily; plastic scratches more easily than glass and can generate sufficient static charge to attract loose threads or fibres when it is wiped”. In a box this size, weight is a real consideration, and acrylic is the safer choice in a child’s room.
Filter ultraviolet if you can. It gives “some protection against light damage”, though CCI adds that the protection “is not complete”.
Seal the back with tape where the backing meets the frame, to keep out dust and airborne dirt.

Light is what fades a signature

Of everything in the box, a marker signature is the most at risk. CCI’s guide to light damage puts “most felt tip pens including blacks” in its most sensitive group, and estimates how long such colours take to show a first noticeable fade:

Light level	CCI’s example	First noticeable fade
50 lux	The museum benchmark	1.5 to 20 years
500 lux	An office	About 7 weeks to 2 years
5,000 lux	A window or a study lamp	5 days to 2 months
30,000 lux	Average daylight	1 day to 2 weeks

These are ranges for a whole class of colourants, not a forecast for one pen. They do show where the risk is. The damage is cumulative and cannot be reversed, and it scales with brightness: at CCI’s figures, an hour of daylight a day through one summer delivers more light than ten years in a hallway lit at 50 lux for ten hours a day.

So hang a signed jersey on an inside wall away from windows, and switch off any spotlight aimed at it when nobody is looking. On lights inside the box, CCI’s framing note is direct: “avoid attaching light fixtures to frames, as these produce excessive light levels in localized spots”. If you fit an LED strip anyway, put it on a switch and leave it off most of the time.

Take a sharp photograph of the signature before you frame it. If it does fade, you have the record.

Add a name plate or a backdrop

A plate under the shirt with the name, number, season or score finishes the box. Text to SVG turns the words into cutting outlines sized in millimetres, for card or vinyl on a cutting machine. The free library has plain shapes that suit a sports box, such as a football, a basketball, a baseball, a soccer ball and a trophy, to cut from card as accents.

Fix these to the backing with glue or foam pads. They are decoration you can remake, so adhesive is fine. Keep it off the shirt.

If something goes wrong

What you see	Cause	What to do
The shirt sags after a few weeks	Too few fixings, or held only at the shoulders	Open the back and add stitches or pins down the side seams and hem
Ripples across the front	The insert is too narrow or too wide	Recut it 10 to 15 mm narrower than the shirt
Cloth pressed against the glass	Box too shallow	Add a spacer strip, or use thinner batting
Rust-brown dots at the pins	Plain steel pins	Replace them with stainless steel
The signature is paler	Light	Move the box. The fade cannot be undone

When to use a framer

Take it to a professional if the shirt is old, fragile, valuable or irreplaceable. CCI lists conditions that should go to a textile conservator before framing, among them “fugitive dyes”, mould, insect damage, stains, splits and tears. In the United Kingdom, the Fine Art Trade Guild sets out levels of framing, from basic to conservation, and advises asking a framer which level suits the piece.