> Title: Best Fabric for Pyjamas: A Sleepwear Cloth Guide | Surajmal > Source: https://surajmal.com/blog/2026/11/best-fabric-for-pyjamas-sleepwear > Publisher: Surajmal Shobhachand [SSL Newsroom](/blog) Sourcing # What Is the Best Fabric for Pyjamas? A Buyer's Guide to Sleepwear Cloth Kolkata 05 NOVEMBER 2026 By Surajmal Editorial Team10 min read Published 5 November 2026 For most pyjama programmes the best fabric is cotton: single jersey or interlock for a knit set, poplin for a woven one, brushed cotton for winter. Modal and viscose are the softest options and carry the most risk in the wash. Satin sells on look and linen on summer comfort. No single cloth wins every season and price point. This guide is for the person specifying the cloth: what each sleepwear fabric weighs, how it shrinks and pills, how to keep a set matching, and what belongs on the tech pack. "Pajamas" and "pyjamas" are the same garment in American and British spelling. ## What is the best fabric for pyjamas? Cotton, in the construction that suits the garment. Cotton breathes, takes repeated hot washes, dyes well and sits in a price band most ranges can carry. The construction decides the character of the set more than the fibre does. [Single jersey](/materials/single-jersey) gives a soft, stretchy, T-shirt hand. [Interlock](/materials/interlock) is a double knit, smooth on both faces and less prone to curling, which is why it is common in children's sleepwear. [Poplin](/materials/poplin) is the crisp woven for a collared, piped pyjama. Brushed cotton, often sold as flannel, is woven cotton with a raised surface that traps warmth. Fabric Construction Hand feel Best suited to Cotton single jersey Weft knit Soft, stretchy, slightly cool Lounge sets, T-shirt tops, knit shorts Cotton interlock Double knit Smooth both faces, stable, a little warmer Children's sets, premium knit pyjamas Cotton poplin Plain weave, fine yarns Crisp, cool, smooth Classic collared woven sets Brushed cotton or flannel Woven, napped Fuzzy, warm, heavier Winter woven sets Viscose Woven or knit Fluid, cool, very soft Summer sets, nightdresses Modal Usually knit Silky, soft, holds colour well Premium lounge and knit sets Bamboo-viscose Usually knit Soft, cool, heavy drape Lounge and summer knit Lyocell Woven or knit Smooth, cool, dry Woven and knit sets with a cleaner hand Satin Satin weave, usually polyester Slippery, lustrous Short sets, camisoles, gifting Linen Plain weave Dry, textured, cool Summer woven sets A [cotton](/materials/cotton) jersey with a small elastane share holds its shape better at the knee and cuff, and a cotton-modal blend softens the hand without the full wash risk of a pure regenerated fibre. ## Which pyjama fabric is softest, and why? Modal, then viscose and bamboo-viscose, then fine combed cotton jersey. Softness comes from the fibre, the yarn and the finish together, so a specification that names only the fibre can get very different cloth from two mills. [Modal](/materials/modal) and [viscose](/materials/viscose-rayon) are regenerated cellulose fibres with a smooth surface, so they feel slick and cool. Cotton softness depends on staple length and on combing, which removes the short fibres that make a cloth feel rough. A finer yarn count gives a smoother knit at the same weight. Finish moves the hand as much as fibre. Brushing raises a warm, fuzzy face. Peaching sands the surface to a suede-like touch. Enzyme washing clears surface fuzz. Silicone softeners make almost any cloth feel softer on the shelf, and some of that washes out within a few cycles. Approve softness after a wash, not off the roll. "Soft pajama material" usually means one of two hands: the cool, fluid touch of modal or viscose, or the warm nap of brushed cotton. They belong to different months, and most ranges need both. ## What GSM should pyjama fabric be? Most knit pyjama fabric runs between about 140 and 220 GSM, and most woven pyjama fabric between about 100 and 180 GSM. The right figure inside that band depends on the season, the opacity a pale colour needs and whether the garment is a top or a bottom. The ranges below are indicative for sleepwear and vary by mill, yarn and finish. Weight should be agreed on the finished, washed fabric, and the [fabric GSM guide](/blog/2026/06/fabric-gsm-weight-guide-apparel-buyers) covers how to state a tolerance. Fabric Typical sleepwear GSM What changes at the heavy end Cotton single jersey 140 to 180 More opacity, less cling, warmer Cotton interlock 180 to 240 Firmer, warmer, better for children's sets Cotton poplin 100 to 130 Less see-through in pale shades Brushed cotton or flannel 140 to 200 Warmer, more lint in early washes Viscose woven 100 to 140 Better drape, less transparency Modal or viscose jersey, with elastane 150 to 200 More body, less tendency to grow in length Bamboo-viscose jersey 160 to 220 Heavier drape, slower drying Satin, polyester 70 to 110 More body, less shine show-through at seams Linen 120 to 170 Fewer creases, less transparency Pale colours need more weight or a tighter construction to stay opaque, which matters in sleepwear because the garment is usually photographed on a model under bright light. ## How do pyjama fabrics behave in the wash? Cotton and polyester are the stable end; viscose and linen move the most. Sleepwear is washed more often than almost anything else a customer owns, so shrinkage, pilling and colour loss decide returns more than the first impression does. Untreated cotton jersey can lose several per cent in length in its first wash unless it is compacted or pre-shrunk. Viscose loses strength when wet and can shrink and distort if washed hot or tumble-dried. Modal is more stable than standard viscose, which is why it is the common choice for knit lounge. Polyester barely shrinks, but its strong fibres anchor pills to the surface, so pilling that would wear off cotton stays visible on a polyester blend. Fabric Shrinkage risk Pilling behaviour Wash notes Cotton jersey Moderate to high unless compacted Low to moderate; pills tend to wear off Specify a pre-shrunk or compacted finish Cotton interlock Moderate Low Stable at the neck and cuffs Cotton poplin Low to moderate Low Can be pre-shrunk at the mill Brushed cotton Moderate Moderate; sheds lint early Brushing loosens surface fibres Viscose High; weak when wet Moderate Cool wash, no tumble-dry is common Modal Low to moderate Moderate under friction More stable than standard viscose Bamboo-viscose Moderate to high Moderate Behaves like viscose in the wash Lyocell Low to moderate Can fibrillate, giving a frosted look Ask for a finish that controls fibrillation Polyester satin Very low Pills stay anchored; snags Low heat when pressing Linen Moderate unless pre-washed Very low Softens with every wash Shrinkage, pilling and colourfastness are tested on the bulk fabric; the [mill test report guide](/blog/2026/07/fabric-testing-mill-test-report-guide) explains each figure. For sleepwear, add colourfastness to perspiration alongside washing, since the garment sits against skin all night. [Lyocell](/materials/lyocell) needs one extra check. Its fibres can split on the surface under wet abrasion, called fibrillation, leaving a pale, frosted look along seams. The [man-made cellulosics guide](/blog/2026/07/man-made-cellulosics-viscose-modal-lyocell) compares the three regenerated fibres in more depth. ## Which sleepwear fabric suits which season? Brushed cotton and interlock for winter, jersey and poplin all year, viscose, modal, lyocell and linen for summer. Satin sells as a look and a gift more than for a season, and polyester satin traps heat. Season Cloths that work Why Winter Brushed cotton, flannel, heavier interlock, waffle knit Raised or double structures trap air Transitional Cotton jersey, poplin, cotton-modal blends Moderate weight, easy layering Summer Viscose, modal, lyocell, [linen](/materials/linen), light poplin Cool hand, moisture moves away from skin Gifting and occasion [Satin](/materials/satin), satin-trimmed sets Lustre and colour carry the product Most satin pyjamas are polyester. It is affordable, holds bright colour and barely creases, but it absorbs little moisture, so it can feel clammy on a warm night. Viscose satin feels cooler and drapes better, with viscose's wash behaviour. Satin is a weave, so the fibre has to be named on the specification and the label. Bamboo needs care on the label too. Almost all bamboo sleepwear is viscose made from bamboo pulp, and a [bamboo](/materials/bamboo) specification should say so. In the United States, the Federal Trade Commission says textiles made from bamboo processed into rayon should be labelled with the generic fibre name, such as "rayon made from bamboo", and that unless a product is made directly with bamboo fibre it cannot be called bamboo. [\[1\]](https://www.ftc.gov/business-guidance/resources/how-avoid-bamboozling-your-customers "Source 1: ftc.gov: how avoid bamboozling your customers") ## How do you keep a pyjama set matching top to bottom? Cut both pieces from the same dye lot, and shade-band the cut panels so a top and a bottom from different ends of the roll are never paired. Most mismatched sets come from pieces cut on different days from different lots. Shade varies within a lot as well as between lots. A long roll can drift end to end, and two rolls from one lot can differ slightly. Shade banding sorts cut panels into groups so the top, bottom and any shorts in a set come from the same band. Mixed-fabric sets are harder. A jersey top with a poplin bottom means two fabrics, usually from two mills, dyed separately on different substrates. They can match under one light and part under another, which is metamerism. Approve lab dips on both substrates against one standard under the retailer's light source; the [colour management guide](/blog/2026/07/colour-management-lab-dips-guide) covers how that approval runs. Contrast piping adds a third colour. Dark piping on a white body has to pass colourfastness to washing, or it bleeds on the first wash. Give the piping its own line on the bill of materials, with shade and fastness requirement. ## What should a sleepwear tech pack specify? The cloth, the finish, the wash performance and the comfort details. A sleepwear garment is worn against skin for hours, so seams, labels and elastic matter as much as the fabric. Tech pack line What to state Why it matters in sleepwear Fabric Fibre and blend, construction, yarn count, finished GSM with tolerance Two mills' "cotton jersey" can differ by 40 GSM Finish Brushed, peached, enzyme washed, softener, pre-shrunk Hand after wash, not on the shelf Shrinkage Maximum in length and width after the stated wash Sets that shrink unevenly stop matching Colourfastness Washing, perspiration and rubbing grades Skin contact and piping bleed Pilling Minimum grade after the agreed test Repeated washing and friction in bed Waistband Elastic type, width, tension, covered or exposed, drawcord Comfort lying down and recovery over time Seams Flatlock, coverstitch, French seams on wovens Raised seams press into skin Labels Printed tagless or soft woven, placement Scratchy labels drive returns Trims Button type, piping, lace, satin trim Buttons on a back panel are uncomfortable to sleep on Care Wash temperature and drying instruction Must match what the fabric was tested to survive The [garment tech pack guide](/blog/2026/05/garment-tech-pack-guide) sets out the full structure; the lines above are the ones a sleepwear brief most often leaves loose. Children's sleepwear is a separate case. In the United States, sleepwear in children's sizes 0 through 14 falls under dedicated flammability standards, with defined exceptions for infant garments and tight-fitting garments, which remain subject to the general flammability standards for clothing. [\[2\]](https://www.cpsc.gov/Business--Manufacturing/Business-Education/Business-Guidance/Childrens-Sleepwear-Regulations "Source 2: cpsc.gov: Childrens Sleepwear Regulations") The choice between a tight-fitting design and a flame-resistant fabric changes the cloth and the fit, so it is made before development starts. The [kidswear safety guide](/blog/2026/06/kidswear-safety-compliance-standards) covers it in full. ## Short FAQ **Is cotton or modal better for pyjamas?** Cotton for durability and hot washing, modal for softness and drape. A cotton-modal blend sits between the two and is a common choice for premium knit sets. **Are satin pyjamas made of silk?** No, not usually. Satin is a weave, and most satin pyjamas are polyester; some are viscose. The fibre should be stated on the specification and the label. **Does brushed cotton pill?** Yes, it can, and it sheds lint in its first washes because brushing loosens surface fibres. A good brushing finish and a tested pilling grade keep it within an acceptable level. **What GSM is a good pyjama jersey?** Typically 140 to 180 GSM for single jersey and 180 to 240 GSM for interlock. Pale colours and winter sets sit toward the heavier end. **Can one fabric be used for both top and bottom?** Yes. A single fabric from one dye lot is the simplest way to keep a set matching. Where the bottom takes more strain, a heavier version of the same cloth works. ## The cloth follows the night it is worn Pick the season, then the hand, then the cloth. Winter wants a raised or double structure, summer a cool regenerated fibre or linen, and the year-round core is still cotton jersey and poplin. Then fix the finished weight, shrinkage, pilling grade and set-matching controls, because a pyjama is judged after its tenth wash. Surajmal Shobhachand supplies [nightwear](/products/nightwear) in poplin, jersey, modal and satin, as woven and knit sets. Related pages - [Nightwear](/products/nightwear) - [Fabrics](/products/fabrics) Share[](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fsurajmal.com%2Fblog%2F2026%2F11%2Fbest-fabric-for-pyjamas-sleepwear) [](https://twitter.com/intent/tweet?url=https%3A%2F%2Fsurajmal.com%2Fblog%2F2026%2F11%2Fbest-fabric-for-pyjamas-sleepwear&text=What%20Is%20the%20Best%20Fabric%20for%20Pyjamas%3F%20A%20Buyer's%20Guide%20to%20Sleepwear%20Cloth) [](https://wa.me/?text=What%20Is%20the%20Best%20Fabric%20for%20Pyjamas%3F%20A%20Buyer's%20Guide%20to%20Sleepwear%20Cloth%20https%3A%2F%2Fsurajmal.com%2Fblog%2F2026%2F11%2Fbest-fabric-for-pyjamas-sleepwear) [](mailto:?subject=What%20Is%20the%20Best%20Fabric%20for%20Pyjamas%3F%20A%20Buyer's%20Guide%20to%20Sleepwear%20Cloth&body=https%3A%2F%2Fsurajmal.com%2Fblog%2F2026%2F11%2Fbest-fabric-for-pyjamas-sleepwear) Surajmal Editorial Team The Surajmal Editorial Team writes from inside a working textile export house in Kolkata, drawing on experience manufacturing garments, fabrics, and yarns for global retail buyers since 1968. Every article is reviewed by practitioners who source, sample, and ship the products they write about. On this page - [What is the best fabric for pyjamas?](#what-is-the-best-fabric-for-pyjamas) - [Which pyjama fabric is softest, and why?](#which-pyjama-fabric-is-softest-and-why) - [What GSM should pyjama fabric be?](#what-gsm-should-pyjama-fabric-be) - [How do pyjama fabrics behave in the wash?](#how-do-pyjama-fabrics-behave-in-the-wash) - [Which sleepwear fabric suits which season?](#which-sleepwear-fabric-suits-which-season) - [How do you keep a pyjama set matching top to bottom?](#how-do-you-keep-a-pyjama-set-matching-top-to-bottom) - [What should a sleepwear tech pack specify?](#what-should-a-sleepwear-tech-pack-specify) - [Short FAQ](#short-faq) - [The cloth follows the night it is worn](#the-cloth-follows-the-night-it-is-worn) More from the newsroom - [Sourcing · 9 min Portugal and Asia in One Range: How a Split Programme Is Planned](/blog/2026/10/portugal-nearshore-asia-volume-split) - [Sourcing · 10 min Garment Sample Costs: What They Cover and Who Pays](/blog/2026/10/garment-sample-costs-who-pays) - [Sourcing · 10 min Yarn, Piece and Garment Dyeing Compared](/blog/2026/09/yarn-piece-garment-dyeing-compared) START A CONVERSATION ## Ready to source with _confidence?_ Send a brief and we'll reply within 24 hours, with a first sample in 4 to 10 days. 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