Children’s t-shirts look like small adult t-shirts. They are not, and the difference shows up in three places: how the sizes are built, what the law requires, and what the wearer does to the garment. The sizing runs on age bands that differ between markets, the safety rules are written into law in the markets you sell into, and the fabric choices matter more because young skin, rough washing and playground wear punish shortcuts faster than adult garments ever show. Brands that treat kids’ tees as a scaled-down afterthought learn all three lessons at once, usually from a retailer’s compliance team.
We manufacture kids’ and youth t-shirts in Bangladesh for children’s brands, schoolwear suppliers and promotional buyers selling into the USA, UK, Europe, Canada, Australia and the Middle East. This guide covers what to specify before production: the sizing system, the safety construction points, the fabric decisions and the labelling, in the order a factory needs them decided.
Sizing by Age Band, and Why the Bands Differ
Kids’ sizes are sold by age (2-3 years, 4-5 years and so on), but children of the same age vary enormously, so a serious size chart carries the garment measurements behind the age label: chest, body length and sleeve for every band. The age is the shopper’s shortcut; the measurements are the product’s truth. Publish both, and build the chart from production measurements of the washed garment, exactly as you would for adults.
The bands themselves differ by market. US and UK children’s sizing use similar age labels but not identical measurement steps, and EU sizing runs on height in centimetres (92, 104, 116, 128, 140, 152), which is a different logic altogether: height maps to the child more honestly than age. If your brand sells across markets, the chart must show all three systems side by side, because a parent converting wrongly buys the wrong shirt and returns it with a review attached. Our Kids’ T-Shirt program is graded across these bands, and the Youth T-Shirt range picks up where the kids’ bands end, so a brand can carry one customer from toddler to teenager without a sizing cliff in between.
The Safety Rules Are Not Optional Extras
Children’s clothing carries safety requirements that adult garments never face, and they are legal conditions of sale in the EU, UK and US, not quality preferences. The headline rules for t-shirts are simple to design around and expensive to discover late. Drawstrings and cords around the neck and hood area are restricted or banned for young children in most markets, which is why kids’ tees are built without them. Small detachable parts, buttons, snaps, sequins and badges, must be attached to withstand pulling by small hands and mouths, and many brands avoid them entirely on under-7 sizes for that reason.
Flammability standards apply to children’s sleepwear most strictly, but general kids’ apparel also sits under market surveillance for fibre content accuracy, chemical limits (azo dyes, formaldehyde, lead and phthalates in prints) and labelling. Water-based print inks and certified fabric routes remove most of the chemical risk at the specification stage, which is where it is cheapest to remove. A factory that produces for regulated children’s markets will raise these points before you do; treat a factory that never mentions them as information in itself.
Construction Details That Matter More on Small Garments
Proportions change the construction. Neck openings must pass over a child’s head comfortably, which means rib quality and stretch recovery at the collar are functional requirements, not finish details: a collar that fights the wearer every morning gets the shirt rejected daily. Shoulder seams sit under schoolbag straps and seatbelts, so smooth, flat seam finishing is a comfort feature parents notice in reviews. Side seams, tagless neck prints or soft woven labels, and no scratchy internal finishes all belong on the specification for the same reason: children report discomfort by refusing the garment, and refusal is the one return reason no size chart can fix.
Grading deserves a factory conversation of its own. Adult grading steps measurements evenly from size to size; children’s bodies do not grow evenly, so kids’ grading steps chest, length and shoulder by different amounts at different bands, with the toddler bands changing shape as much as size. Ask to see the full graded specification, not just the sample size, and measure at least two bands against it at approval. A pattern that is right at 7-8 years and wrong at 3-4 is the classic childrenswear trap, and it is invisible until the bulk is cut.
Reinforcement earns its place differently too. Elbows and hems see abrasion adults never generate; a slightly denser fabric in the 160 to 180 GSM range, with strong hem stitching, outlasts a cheaper lightweight shirt through the hand-me-down cycle that kids’ clothes actually live. Durability in childrenswear is also a sustainability claim a brand can make honestly, because a shirt worn by two children is the greenest shirt in the range.
Fabric Choice for Young Skin
Cotton is the default for good reasons: soft hand feel, breathability and tolerance of the hot, frequent washing kids’ clothes receive. Combed cotton improves softness further by removing short fibres that pill and scratch. Cotton-polyester blends trade a little softness for shape retention and faster drying, which schoolwear buyers often prefer for uniform shirts washed several times a week. Whichever route you choose, specify pre-shrunk fabric and honest fibre-content labelling, because a size 5-6 that washes into a 3-4 is both a returns problem and a safety-chart inaccuracy.
For very young children, fabric weight follows the season and the market more than fashion: lighter jerseys for summer programs in warm climates, mid-weight for year-round school and retail basics. The fabric decisions from our adult ranges carry over, and the fabrics guide explains the knit options; the difference is that in childrenswear the softness and wash tests are pass-or-fail gates rather than preferences.
Sensitive-skin considerations sit behind many buying decisions in this category, even when parents never use the words. Flat, smooth internal finishes, inks that sit in the fabric rather than on it, and labels that do not scratch are the specification answers. Certified fabric routes such as OEKO-TEX tested materials give brands a documented way to support the claims their packaging makes, and retailers in regulated markets increasingly ask for the paperwork rather than the promise. Build the documentation into the order from the start: test reports belong to a fabric and a production batch, and assembling them after shipment is slow and sometimes impossible.
Printing and Decoration on Kids’ Shirts
Age-appropriateness shapes design choices too: prints positioned for a 4-year-old’s proportions read wrongly when the same artwork is scaled flatly to a 12-year-old, so artwork should be re-proportioned per band group, with the print width stepping at the same points as the garment grading. It is a small artwork task that separates ranges designed for children from ranges merely shrunk for them.
Decoration on children’s garments is held to the same chemical limits as the fabric, and placement rules differ: chest prints should sit clear of the neckline stretch zone, and print hand feel matters because a stiff plastisol block on a small chest is uncomfortable against skin. Water-based inks give the softest result and align with the chemical-compliance route most brands now specify. School and team buyers should also note sizing on group orders: classes and squads split across age bands unevenly, weighted to the middle bands, and a small top-up allowance in the largest band saves the tallest child from the wrong shirt on photo day.
School and Team Programs: The Other Kids’ Market
A large share of kids’ t-shirt volume is not retail at all: school uniforms, PE kits, holiday camps, sports clubs and school trip shirts. These programs buy on a calendar (terms, seasons, tournaments) and judge suppliers on consistency above novelty, because this year’s shirt must match last year’s on the same child-facing shelf or team photograph. For uniform programs the priorities shift slightly: colour-fastness across reorders matters as much as initial colour, sizes must be reorderable band by band rather than as full ranges, and name-label-friendly construction (a smooth inside back neck for iron-on or written labels) is a detail school parents genuinely value.
Trip and camp shirts behave more like event shirts, with one child-specific adjustment: sizing data usually comes from the school or club, given as ages, and the conversion to production bands is the supplier’s job to get right and confirm in writing before cutting. A one-page size confirmation, signed off by the organizer, prevents the entire class of error where the shirts are beautifully made in the wrong distribution.
Kids’ T-Shirt Labelling: What Must Be on the Garment
Kids’ garments carry the standard care and fibre-content labelling of adult clothing, plus sizing by the market’s system and, for regulated routes, the manufacturer or importer identification your market requires. Keep the size marking consistent between the garment label, the polybag and the product page chart; mismatched markings are a quiet, common cause of “wrong size” returns that are actually warehouse-picking errors. Our MOQ and production page sets out how labelling and packing are handled inside a program, including barcode and retail-ready packing for children’s brands.
Ordering Kids’ T-Shirts in Bulk: Ratios and Minimums
Age-band demand is not even: the middle bands (roughly 5 to 10 years) carry the volume in most retail and school programs, with the toddler and teen ends thinner. Order ratios should follow your channel’s evidence where you have it; first orders do well weighted to the middle with a modest allowance at both ends. Our production minimum is 1,200 pieces per style in up to two colours, split freely across the age bands in your ratio, which suits a full kids’ range launch or a school program in one style. Because children’s sizing and safety are specification-heavy, approve a sample in every band’s middle size at minimum, wash-tested, before bulk: grading errors multiply across bands in a way adult ranges never experience.
Frequently Asked Questions
Should kids’ t-shirt sizes be listed by age or by height?
Both, with garment measurements behind them. EU markets buy by height in centimetres, US and UK buyers shop by age bands, and parents everywhere check measurements when they exist. One chart showing age, height, chest and length prevents most sizing returns.
What safety rules apply to children’s t-shirts?
The key rules are restrictions on drawstrings and cords near the neck for young children, secure attachment of any small parts such as buttons or badges, chemical limits on dyes and prints, and accurate fibre-content labelling. Sleepwear carries additional flammability standards. These are legal requirements in the EU, UK and US markets.
What fabric is best for kids’ t-shirts?
Combed cotton is the most common choice for its softness and wash tolerance. Cotton-polyester blends suit schoolwear and uniforms where shape retention and fast drying matter. Specify pre-shrunk fabric so the size chart stays true after washing.
What is the minimum order for kids’ t-shirt production?
Our minimum is 1,200 pieces per style in up to two colours, and the quantity can be split freely across age bands in the ratio your program needs, which makes a full size range practical in a single order.