Underwear & Sleepwear

Underwear and sleepwear at Global Swanky focuses on men's pajama sets, from cotton plaid and modal three-piece sets to satin-finish, coral velvet and heavyweight silk pajamas, plus a thermal underwear set and couples' loungewear. From $12.52, with free US shipping.

On this page

1. What Is Underwear and Sleepwear?
2. What's in Our Underwear and Sleepwear Collection?
3. Men's Pajama Sets
4. Loungewear and Kimono Sets
5. Couples' Sleepwear
6. Thermal Underwear
7. Reading Fabric Labels
8. Choosing Fabric by Season
9. Finding the Right Size
10. Caring for Sleepwear
11. Sleep Comfort Tips
12. Sleepwear as a Gift
13. Underwear and Sleepwear for Travel
14. Questions to Ask Before You Buy
15. How Much Does Underwear and Sleepwear Cost?
16. Shipping, Returns and Support
17. Underwear and Sleepwear FAQs
18. Find the Right Underwear and Sleepwear

What Is Underwear and Sleepwear?

Underwear is worn next to the skin under clothing, while sleepwear, also called nightwear, is clothing designed for sleeping and relaxing at home. Wikipedia describes nightwear as clothing such as pajamas, nightgowns and robes worn for sleeping.

Habits vary widely. Wikipedia cites a 2004 US survey in which 13% of men said they wear pajamas or nightgowns to sleep, 31% wear underwear and 31% sleep nude.

Good underwear and sleepwear should feel soft, breathable and comfortable, with a relaxed fit that doesn't restrict movement while you sleep.

Pajamas, loungewear and thermal underwear

Pajamas are two-piece sets of a top and pants or shorts, designed mainly for sleeping. Loungewear is similar but made to wear around the house during the day as well.

Thermal underwear, also called long underwear or long johns, has long sleeves and long legs and is worn as a warm base layer in cold weather. Wikipedia notes it's normally worn during cold weather and can be made from cotton or synthetic materials.

What's in Our Underwear and Sleepwear Collection?

The collection lists 21 products, and every one showed as available when we updated this page on October 5, 2026. Prices run from $12.52 to $669.33, with a median starting price of $21.63.

Groups come from product titles and descriptions on October 5, 2026, and counts are approximate since some sets fit more than one group. Check each listing's fabric details before ordering.

Men's Pajama Sets

Pajama sets are the heart of our underwear and sleepwear range. Most include a button-up or pullover top with matching long pants, shorts or both.

Cotton pajamas

Cotton is breathable, soft and easy to wash, which makes it a classic sleepwear fabric. The Men's Cotton Plaid Pajama Set costs $13.87 to $14.52, and the Men's Long Sleeve Cotton Pajama Set Plaid costs $23.74 to $25.43.

Modal pajamas

Modal is a soft fiber made from wood pulp, known for its smooth feel and drape. The Men's Pajamas Modal Three-Piece Home Wear Suit costs $27.17.

Satin-finish and "ice silk" pajamas

Satin and "ice silk" describe a smooth, cool-feeling finish. In our listings, most of these sets are polyester, such as the Men's Silk Satin Pajamas Set ($16.35 to $23.16) and the Men's Thin Silk Pajamas Long Sleeve Suit ($20.50 to $21.53), whose descriptions name polyester or imitation silk.

Polyester satin is affordable, easy to wash and resists wrinkles, though it's less breathable than cotton or real silk.

Heavyweight silk pajamas

The Mumi Heavyweight Silk Pajamas for Men cost $99.08 to $669.33 and are described as crafted from silk. "Mumi" refers to momme, a unit used to measure silk weight; a higher momme generally means a denser, more durable silk.

Real silk feels smooth and regulates temperature well, but it needs gentle care.

Warm winter pajamas

For cold nights, the Men's Coral Velvet Pajamas Suit costs $51.83 to $53.21, and the Mens Thickened Cartoon Plus Size Pajama Set costs $30.65 to $33.40.

Summer sleepwear

Lightweight short sets keep you cool. The Men's Summer Ice Silk Pajamas Vest Shorts Sleepwear Set costs $20.39 to $21.78, and the Men's Soft Short-Sleeve Plus Size Pajamas Suit costs $17.17.

Loungewear and Kimono Sets

Loungewear blurs the line between sleepwear and casual homewear. The Mens Solid-Color Striped Long-Sleeve and Long-Pant Loungewear costs $21.63 to $22.65, and the Men's Loose Japanese Kimono Pajama Set costs $27.20 to $27.87.

Kimono-style sets wrap or tie at the front, giving a relaxed, airy fit for warm evenings.

Couples' Sleepwear

Matching sleepwear is a popular gift for couples. The Matching Couples Pajamas Crane Print Silky Long Sleeve Loungewear cost $18.70 to $20.46, and the Loose Casual Middle Eastern Style Nightgown for Couples costs $12.52 to $24.63.

Check the size chart for each partner, since sizes run differently across styles.

Thermal Underwear

Thermal underwear adds warmth as a base layer under clothing. The Thermal Underwear Set, Knitted Cotton Stretch Fit, costs $23.52 to $23.88.

Wear thermals snug but not tight, so they trap warm air without restricting movement. Cotton feels soft and breathable for everyday wear, while synthetic thermals wick moisture better for outdoor activity.

Reading Fabric Labels

Fabric names in underwear and sleepwear listings can be confusing. The FTC's textile labeling guide explains that most clothing must carry a label listing fiber content, country of origin and the business responsible, with fibers named by generic names such as cotton, polyester or spandex (FTC, Threading Your Way Through the Labeling Requirements).

Terms like "ice silk," "satin" and "silky" describe how a fabric looks or feels, not what it's made of. Satin is a weave, which can be made from polyester, silk or other fibers.

When you choose underwear and sleepwear, read the description for the fiber content. If a listing doesn't state it clearly, ask our support team before ordering.

Choosing Fabric by Season

The right fabric keeps your underwear and sleepwear comfortable all night, whatever the weather.

Summer

Lightweight cotton, modal and short sets help heat escape. Hot sleepers often prefer breathable natural or semi-natural fibers over polyester satin.

Spring and fall

Long-sleeve cotton or modal sets suit cooler nights without overheating. Layer a light robe or cardigan for early mornings.

Winter

Coral velvet, fleece and thickened polyester sets trap warmth. Thermal underwear adds an extra layer for very cold rooms or outdoor activities.

Finding the Right Size

Most of our underwear and sleepwear listings use letter sizes from S to 6XL. Sizes vary between makers, so measure before you order:

1. Use a soft tape measure and wear light clothing.
2. Measure your chest around the fullest part, keeping the tape level.
3. Measure your waist where you usually wear your pants.
4. Measure your hips around the widest point.
5. Measure your inseam from the crotch to the ankle for long pants.
6. Compare your measurements with the size chart in each listing.
7. Size up if you're between sizes or prefer a looser fit.

For sleepwear, a slightly loose fit is more comfortable than a snug one. If you're between sizes, size up, especially for long-sleeve sets that may shrink a little after washing.

Plus sizes

Several pajama sets come in sizes up to 5XL or 6XL, including the Men's Soft Short-Sleeve Plus Size Pajamas Suit and the Mens Thickened Cartoon Plus Size Pajama Set. Check the chest and waist measurements rather than relying on the letter size alone.

Caring for Sleepwear

Good care keeps underwear and sleepwear soft and long-lasting.

Cotton and modal

Machine wash cotton and modal in cool or warm water with similar colors. Tumble dry on low or line dry to reduce shrinking.

Polyester satin

Wash satin-finish sets on a gentle cycle in cool water, ideally inside a mesh laundry bag. Hang them to dry to avoid snags and heat damage.

Silk

Hand wash real silk in cool water with a mild detergent made for delicates, or use a gentle machine cycle if the label allows. Roll it in a towel to remove water, then dry flat away from sunlight.

Coral velvet and fleece

Wash warm sets inside out on a gentle cycle, and avoid fabric softener, which can flatten the pile. Air dry or tumble dry on low.

Sleep Comfort Tips

Comfortable underwear and sleepwear is one part of better rest, alongside a cool, dark, quiet bedroom. Choose breathable fabrics if you tend to overheat, and loose, non-restrictive cuts so you can move freely.

Wash new sleepwear before the first wear to remove finishing chemicals and soften the fabric. Change sleepwear regularly, especially in warm weather.

Keep a lighter and a warmer set on hand, so you can adapt as the seasons change.

Sleepwear as a Gift

Pajamas and other underwear and sleepwear make thoughtful, practical gifts for birthdays, holidays and Father's Day. Silk or satin-finish sets feel luxurious, while cotton plaid sets are a cozy classic.

Matching couples' pajamas are popular for anniversaries and holiday photos. Check the recipient's usual size and choose a relaxed fit if you're unsure.

Underwear and Sleepwear for Travel

Lightweight, wrinkle-resistant underwear and sleepwear packs easily. Polyester satin sets and thin modal sets fold small and dry quickly if you need to wash them on the road.

A set that doubles as loungewear lets you relax in hotel rooms and on long trips without packing extra clothes.

Questions to Ask Before You Buy

A few quick questions help you choose underwear and sleepwear that suits you:

• What fiber is it made from: cotton, modal, polyester or silk?
• Do I sleep hot or cold?
• Do I want long sleeves, short sleeves or shorts?
• What are my chest, waist and hip measurements?
• Is it for sleeping only, or lounging at home too?
• How will I wash and care for it?

If any detail is unclear, ask our support team before you order.

How Much Does Underwear and Sleepwear Cost?

Most underwear and sleepwear in this collection costs under $30. Of 21 listings, 8 start under $20, 8 start between $20 and $30, 3 start between $30 and $50, and 2 start at $50 or more.

Here's what each band buys:

• Under $20: cotton plaid sets, satin-finish long-sleeve sets, short-sleeve plus-size sets and couples' sleepwear.
• $20 to $30: loungewear, modal three-piece sets, kimono sets, thermal underwear and summer short sets.
• $30 to $50: thickened winter sets and printed satin-finish pajamas.
• $50 and up: coral velvet sets and heavyweight silk pajamas, up to $669.33.

Standard US shipping is free, so the price you see is what you pay for delivery.

Shipping, Returns and Support

We ship underwear and sleepwear to US addresses only, and standard shipping is free on every order. Most orders arrive within 6 to 32 business days, and you can track your order once it ships.

Returns are accepted within 30 days of delivery if the item is new, unworn, unwashed and in its original packaging, with no restocking fee. Read the full terms in our return policy, and contact our support team with sizing or fabric questions.

For more menswear, browse our men's clothing collection and our cardigans collection for cozy layers.

Underwear and Sleepwear FAQs

What fabric is best for sleepwear?

It depends on how you sleep: cotton and modal are breathable and soft, which suits hot sleepers, while coral velvet and fleece keep you warm in winter. Real silk regulates temperature well but needs gentle care. Our underwear and sleepwear range covers all of these.

Is "ice silk" real silk?

No, "ice silk" is a marketing term for smooth, cool-feeling fabrics, usually polyester or other synthetics, so check the fiber content in each listing. In our range, most satin-finish and ice silk pajamas are polyester, while the heavyweight silk set is described as silk.

What does momme mean for silk pajamas?

Momme, sometimes spelled "mumi," is a traditional unit used to measure silk weight. A higher momme generally means a denser, more durable silk that feels more substantial. Our heavyweight silk pajamas for men use the term in their title.

How should men's pajamas fit?

Pajamas should feel relaxed, with room to move at the shoulders, chest and hips while you turn in bed. Sleeves and pant legs should reach the wrist and ankle without dragging. If you're between sizes, size up, since cotton may shrink slightly after washing.

Do you carry plus-size sleepwear?

Yes, several sets in our underwear and sleepwear range come in sizes up to 5XL or 6XL, including short-sleeve and thickened winter pajama sets with relaxed fits. Check each listing's chest and waist measurements, since sizing varies between styles.

How do I wash satin pajamas?

Wash satin-finish pajamas on a gentle cycle in cool water, ideally in a mesh laundry bag, and hang them to dry. Avoid high heat in the dryer, which can damage the smooth finish, and wash them separately from items with zippers or hooks.

What is thermal underwear for?

Thermal underwear is a warm base layer with long sleeves and long legs, worn under clothing in cold weather. Our knitted cotton stretch thermal set costs about $24 and suits everyday winter wear, commuting and relaxing at home on cold evenings.

Should I wash new sleepwear before wearing it?

Yes, washing new underwear and sleepwear before the first wear removes finishing chemicals, softens the fabric and reduces any shrinkage surprises later. Follow the care label, and wash dark colors separately the first few times in case dye runs.

How long does shipping take?

Most orders arrive within 6 to 32 business days of being placed. That covers 1 to 2 business days of handling and 5 to 30 business days in transit. Standard shipping is free on every order, and we currently ship to US addresses only.

Can I return sleepwear?

Yes, within 30 days of delivery, if it's new, unworn, unwashed and in its original packaging with tags attached. Email support@globalswanky.com with your order number, the product name and the reason, then wait for return instructions. There's no restocking fee.

Find the Right Underwear and Sleepwear

The right underwear and sleepwear comes down to three checks: a fabric that suits how warm you sleep, a relaxed size that fits your measurements, and care you're happy to follow. Get those right and every night feels more comfortable.

Ready to shop? Scroll up to the product grid, check each set's fabric and size chart, and choose the underwear and sleepwear that suits you.