Men's Pyjamas

Mariner Underwear has been making men's pyjamas since 1967. The range covers long styles for winter nights and short pyjama options for warm summer nights. Fabrics are chosen for how they wear across months of regular washing. All pyjamas for men run from S to XXL, with selected styles reaching XXXL, cut comfy enough to sleep in without restriction. Every men's pyjama is sold as a coordinated pj set with including a matching top and bottom.

You can browse short sleepwear in our men's short pyjamas range, cotton styles in men's cotton pyjamas, separate pieces in men's pyjama bottoms, or the full nightwear collection at men's nightwear.

Fabrics: Cotton, Flannel, Mercerised Jersey

Combed cotton poplin is the core fabric. Combing removes short fibres before weaving to produce a tighter, smoother cloth that stays soft across dozens of washes. Long pyjamas in poplin have a slight sheen and a crisp feel. They come in classic stripes and checks, with a traditional button-front jacket with chest pockets and a cord trouser with a real fly. Poplin styles are solid year-round sleepwear for men who prefer structure and breathability .

Mercerised cotton is lighter and silkier. The mercerisation process treats combed cotton yarn under tension, rounding the fibres to improve softness and colour retention. V-neck long styles and buttoned-collar options use this fabric. It drapes close to the body, feels cool and soft against the skin, and washes without losing its shape. A good choice for men who run warm or want a more refined feel at bedtime.

The short style is crafted from solid-color jersey, a lightweight, breathable fabric with enough stretch to ensure a comfortable fit. Both pieces are machine-washable at 30°C without risk of shrinking, while the elasticated waistband moves with you.

Flannel is reserved for selected winter long styles. One option uses the jacket and the leg in 100 percent combed flannel for cosy nights. A second pairs a jersey top with a flannel leg for warmth below with a lighter feel on top. The right pick for cold bedrooms in autumn and winter.

Long Styles: Pyjama Shirt and Collar Cuts

The long styles come in three top versions. The open-collar style can be buttoned either fully or halfway, depending on your preference. The button-collar style features a short button placket just at the neck. The V-neck top elegantly highlights the neckline. All bottoms feature an elasticated waist with an adjustable drawstring.

Pattern options: small check in poplin, fil-dye stripe tops with solid navy, geometric print on mercerised cotton, and solids in navy, grey, petrol, and bordeaux. The jogger-style, with a jacquard pique top and plain jersey, works equally well as loungewear for a quiet night at home.

Short Sets and Loungewear

Short pyjama options pair a short-sleeve top with pyjama shorts. Right for summer nights, warm bedrooms, and men who sleep hot. Collar options: V-neck, round neck, and buttoned. The soft cotton and mercerised jersey versions are both breathable and wash-fast. Sizes S to XXL. Men's pjs in the short format are available as full pj sets or as separate pieces.

Patterns, Colours, and Mix and Match

Navy blue is the most common base color, but grey, petrol blue, burgundy, and sky blue are also available. In terms of patterns, the selection ranges from checks and stripes to geometric prints and unique designs. Most styles pair a striped top or a checked jacket with a matching solid-colored piece. Solid-colored styles are the easiest to coordinate with items you already own.

Fitting and Sizing

Sizing runs S (2/S) to XXL (6/XXL) on most styles, with selected mercerised cotton long options extending to XXXL (7/XXXL). The fit is relaxed with room to move. Take your usual clothing size. If you're between sizes, go up for a more traditional drape.

Washing and Care

Machine wash at 30C, inside out. Close the adjustable cord before the wash cycle. Skip fabric softener on flannel as it flattens the brushed surface over time. Air drying extends the life of the elastic waistbands and keeps the mercerised cotton looking its best. Poplin and plain jersey both dry quickly at room temperature. A timeless quality, cared for properly, lasts years. Men's pjs that are air-dried and washed cool hold their shape wash after wash.

Frequently Asked Questions

What fabrics are used in Mariner Underwear men's pyjamas?

The range uses combed cotton poplin, mercerised cotton, cotton jersey, and brushed cotton flannel. Poplin and mercerised cotton are in the long styles. Jersey covers the short options. Flannel is in the winter-weight long styles.

What sizes do the Mariner Underwear pyjamas come in?

S to XXL on most styles, with selected long sets extending to XXXL. Sizing is relaxed cut so take your standard clothing size.

What is the difference between long and short pyjama sets?

Long pyjama sets have full-length legs and long-sleeve tops, suited to cool or cold bedrooms. Short pyjamas pair a short-sleeve top with shorts, suited to warm nights and heated rooms. Many men keep both in the drawer and switch by season.

Can I buy pyjama bottoms separately?

Yes. The Mariner Underwear men's pyjama bottoms range sells separate leg pieces for replacing a single part of a set or pairing with tops you already own.

How do I wash my pyjamas to make them last?

30C machine wash, inside out, no fabric softener. Air dry rather than tumble dry to protect the elastic waistband and keep the fabric in good condition through repeated washing.

What collar styles do the long pyjama jackets come in?

Three options: open-front with full button placket, V-neck pullover with no buttons, and buttoned collar with a short placket at the neck. The round-neck jogging-cut option has no collar structure.

Are there cosy pyjamas in flannel for winter?

Yes. Selected long styles use checked or plain flannel on both jacket and leg, or just on the leg paired with a jersey top. Both options work well for cold-bedroom months.