What Are Pyjamas and Which Types Can You Make?
Pyjamas are two-piece sleepwear: a top and a trouser or short, sold together as a set. The category includes classic button-up pyjamas with a collar and piping, simple jersey pyjama sets with a crew neck, short-sleeve and short-leg summer sets, long-sleeve winter sets in brushed cloth, and kids pyjamas in smaller sizes. Pyjama trousers are also sold on their own as lounge bottoms. The common thread is comfort for sleep, which drives the choice of fabric, ease and trims.
Pyjama sets are usually bought as a pair, so consistency between the top and bottom matters more than in most categories. The rest of this guide covers fabrics, seasons, construction, sizing and the safety questions you need to settle with the factory early. If you also plan daywear comfort pieces, our loungewear manufacturing guide covers the neighbouring category.
Pyjama Fabric: Jersey, Poplin, Flannel and Satin
Pyjama fabric needs to be soft against the skin, breathable, easy to wash and stable in the sewn set. Cotton jersey is soft and stretchy. Woven cotton poplin is crisp and cool. Flannel and brushed cotton are warm and cosy. Satin has a smooth luxurious drape but behaves very differently in production. Select the fabric by season, price point and care expectations.
Typical pyjama fabrics
| Fabric | Character | Typical weight (GSM, approx.) | Best for |
|---|---|---|---|
| Cotton jersey | Stretchy, soft, easy to wear and wash | 140–200 | Everyday sets, kids pyjamas, summer and spring |
| Brushed or interlock jersey | Warmer, slightly heavier, smoother surface | 180–260 | Autumn sets, cosy long-sleeve styles |
| Cotton poplin | Crisp, cool, woven, holds piping neatly | 100–140 | Button-up pyjamas, summer and year-round |
| Flannel or brushed cotton | Warm, soft napped surface, woven | 150–220 | Winter pyjamas, checks and prints |
| Viscose or modal blend | Very soft and drapey; check care | 120–200 | Premium sets; discuss with the factory |
| Satin (polyester or silk) | Smooth and lustrous, slippery | 70–120 | Occasion sleepwear; outside Ruhrose core |
Typical ranges only. Weights vary by yarn, construction and mill. Confirm GSM on a swatch.
Details of each cloth are in our guides to poplin and flannel. Satin and silk pyjamas need specialist handling, and our satin fabric guide explains why they sit outside the core range for most casualwear factories.
The matrix below gives an indicative comparison of the three most common casualwear pyjama fabrics across the properties customers notice first.
Pyjama fabrics compared
1 dot = low, 5 dots = high
| Cotton jersey | Cotton poplin | Flannel | |
|---|---|---|---|
| Softness | ●●●●● | ●●●●● | ●●●●● |
| Warmth | ●●●●● | ●●●●● | ●●●●● |
| Breathability | ●●●●● | ●●●●● | ●●●●● |
| Crisp, tailored look | ●●●●● | ●●●●● | ●●●●● |
| Ease of care | ●●●●● | ●●●●● | ●●●●● |
| Pilling risk (higher dots = lower risk) | ●●●●● | ●●●●● | ●●●●● |
Indicative ratings based on typical fabric/process characteristics, not laboratory results.
Choosing Pyjama Fabric by Season
Season decides weight and warmth, and a range that covers more than one season needs more than one fabric. The table links common seasons to fabric and construction choices, and the chart that follows shows how the typical weights compare.
Pyjamas by season
| Season | Suggested fabrics | Typical style | Watch for |
|---|---|---|---|
| Summer | Light cotton jersey or poplin | Short sleeve with shorts, or a cami set | Transparency in light colours; fine seams |
| Spring and autumn | Mid-weight jersey, interlock, brushed poplin | Short or long sleeve with long trousers | Shrinkage and pilling |
| Winter | Flannel, brushed cotton or brushed jersey | Long sleeve, long trousers, button-up | Flammability and fit requirements; pilling on brushed surfaces |
| All-year gifting | Mid-weight cotton jersey | Classic crew-neck set | Easy-care labelling and set matching |
General guidance. Choose according to your customer climate and price point.
Weight bands for the common choices overlap, because woven and knitted fabrics at the same GSM feel very different.
Typical pyjama fabric weight bands
GSM bands
Typical ranges that vary by product and factory. Not a specification.
When in doubt, sample two weights in the same style and compare them after washing. The fabric that feels right on the swatch is not always the one that looks best after a few cycles.
Construction: Waistband, Button Placket, Piping and Cuffs
Pyjamas look simple, but the construction details drive the quality feel. A woven button-up top has a collar, a placket, buttons and often contrast piping. A jersey top has a neckband, set-in or raglan sleeves and simple hems. The trousers have a waistband and legs that suit the style.
Waistbands and trousers
- Elasticated waistband in a soft, wide elastic enclosed in a casing, often with a drawcord for adjustment.
- Flat-front woven trousers with a half-elastic back for a tidy look.
- Cuffed legs in rib for jersey sets, or a plain hem for woven sets.
- Side seam pockets stitched in a soft fabric to avoid bulk.
Button-up tops
- Button placket with interfacing to keep it stable; matching buttons that sit flat when lying down.
- Notch collar or a simple band collar, with piping along the edge for a classic finish.
- Piping, the contrast strip inserted into seams, needs careful sewing so it stays even along curves.
- Chest pocket optional; keep it flat and lightly finished.
Piping, plackets and collars are where woven pyjamas add sewing time and cost. A jersey set with a simple neck and hem has fewer operations and is more forgiving when sizing. Our guide to gingham fabric shows how checks and stripes need extra care in cutting and matching at the placket and pocket.
Pyjama Sizing, Ease and Fit
Pyjama fit is deliberately relaxed. A pyjama top has generous ease through the chest and sleeve, and the trousers have a comfortable rise and leg opening. That ease makes sizing forgiving for the customer, but it makes grading and specification more important, because small shifts in ease change the product feel.
Write measurements for each size, including chest, body length, sleeve length, waist at rest and stretched, hip, rise, inseam and leg opening. Specify how each size is graded and keep top and bottom sizing aligned so that a medium top matches a medium trouser. Pyjama trousers should also have enough room in the seat and thigh to avoid strain when the wearer moves in sleep.
Jersey and woven sets behave differently in sizing, so choose the construction first. The table below summarises the main points.
Jersey pyjamas vs woven pyjamas
| Point | Jersey sets | Woven sets |
|---|---|---|
| Stretch | Stretches and recovers, forgiving between sizes | Little stretch; needs more precise ease |
| Sewing | Overlock and coverstitch seams, fewer operations | Plackets, collars, piping and buttons add operations |
| Look | Casual and soft | Classic and tailored |
| Shrinkage | Can shrink in length; test and allow | Usually lower, but test |
| Piping and plackets | Rare | Common, a signature detail |
General differences only. Specific fabrics and factory methods vary.
Print, Colour and Matching Sets
Pyjamas often carry prints, checks, stripes or all-over designs, which add complexity when top and bottom are cut from the same fabric. Print placement should be planned on the marker so that pattern repeats align at the placket, pockets and side seams. For woven checks, matching at the centre front is a visible quality point.
Colour consistency matters as well. If the top and bottom are cut from different rolls or dye lots, the difference shows once the set is laid out. Ask the factory how it controls shade, and approve a colour standard before cutting. Where the print is a heat transfer or screen print, check that the ink is soft, flexible and washes well, so it does not feel stiff against the skin.
Labels, Care Instructions and Packaging
Pyjama labels should be soft, secure and legally complete. Tagless or heat-transfer labels reduce irritation at the neck and waist. Care labels should reflect the fabric, such as a lower wash temperature for viscose or brushed cotton. Fibre content labelling and other requirements apply to garments sold in the UK, so read our guide to UK clothing labelling requirements and confirm the current rules.
Packaging is part of the product for gift sets. A folded set in a box or bag needs a size, a fibre label and care instructions on the pack as well as on the garment, so plan the artwork with the packing in mind.
Nightwear Safety: What You Must Confirm
UK nightwear is subject to safety rules, particularly children nightwear, which has flammability and fit requirements. We do not set out the regulation detail here, because the rules are specific and can change. Confirm the current requirements with your factory, a test house or Trading Standards before you finalise the fabric, design and labelling.
Flammability, fit and labelling requirements can differ between adult and children nightwear, and between pyjamas and loungewear. If a garment is sold for sleep, ask the factory which tests apply, and put them in the order before the fabric is bought.
Cords and drawstrings on children clothing are also regulated, and BS EN 14682 is the standard that covers them. Avoid design features such as long cords or decorative loops on children pyjamas until you have confirmed the current requirements. Our garment testing guide lists the routine checks that sit alongside any nightwear tests.
Kids Pyjamas: Sizing and Practical Points
Kids pyjamas follow the same construction principles as adult sets, with age-based sizing, closer attention to comfort and tighter safety control. Children grow quickly, so sizing is usually by height and age band, and sets are cut with enough room to last a season. Keep trims minimal, avoid hard decorations that could detach, and choose soft, wash-friendly fabrics with a low shrinkage tendency.
Because kids garments carry higher compliance risk, treat testing as part of the product plan rather than an extra. Agree test requirements with the factory before sampling, and keep a record of results for each production batch.
Pyjamas Spec Checklist and Sampling
A strong specification prevents delays. Include the fabric, construction, trim and labelling details for both pieces of the set in a single tech pack, and approve the set together. Our overview of the garment testing process explains the checks worth running on a sample.
Pyjamas tech pack checklist
- Fabric: fibre, structure, GSM, finish and shrinkage target.
- Set definition: pieces, sizes and colourways.
- Measurements for top and bottom, including ease.
- Construction details: collar, placket, piping, waistband, cuffs.
- Buttons, elastic, drawcord and any trims.
- Print or pattern placement and matching points.
- Labels, care instructions and packing.
- Safety test requirements confirmed with the factory.
Add sketches and callouts for each detail, and confirm safety tests before the order.
Once the specification is agreed, sampling usually follows the sequence below. The number of rounds depends on how close the first set is to your reference.
Pyjamas sampling steps
- 1Brief and safety checkShare the reference, fabric and sizes, and agree which safety tests apply.
- 2Pattern and first sampleThe factory makes a pattern and a set sample in the intended or similar fabric.
- 3Fit and detail reviewCheck ease, placket, piping, waistband and set matching.
- 4Wash and testWash the sample, check shrinkage, shade and seams, and run required tests.
- 5Pre-production approvalSign off the full set before bulk cutting.
Sampling is how fit, fabric and construction are agreed before production.
Common Pyjamas Production Faults
The faults below are the ones to look for at sample approval and again at final inspection. Most are avoidable if the specification is clear.
- Piping that wanders or twists along curves, caused by poor cutting or tension.
- Plackets that gape or ripple, usually from weak interfacing or uneven stitching.
- Print or check mismatch at the centre front or between pocket and body.
- Shrinkage that makes the legs short or the top ride up after washing.
- Elastic that loses recovery or digs into the waist.
- Shade difference between top and bottom, especially in solid colours.
- Missing or incorrect labels on garments and packs.
Pair each fault with a check at sampling, and decide how many of each defect type you will accept using the principles in standard inspection plans.
How Ruhrose Approaches Pyjamas
Cotton jersey pyjamas and woven cotton casual pyjamas in poplin or brushed cotton sit close to what Ruhrose develops for UK buyers, with production in Bangladesh and sampling before bulk. We work from your reference set, check fabric, set matching and trims at sample stage, and tell you early where a safety test is needed. Satin and silk pyjamas are outside our core range, and a specialist maker is a better route for those. Our loungewear guide is a useful read if you are planning a wider comfort range.