person wearing light colored satin pajama top

Should I Wear Underwear Under My Pajamas?

Should I Wear Underwear Under My Pajamas?

Have you ever wondered whether you should wear underwear under your pajamas? The debate over whether or not to put on an extra layer of clothing before snuggling up in your comfy sleepwear has been going on for years. Why is this worth considering? From health benefits to personal preferences, wearing underwear underneath your pajamas can make a big difference in how you feel and function the next day. This article will discuss the purpose of wearing underwear with your pajamas and why you might want to consider doing so.

What Is the Purpose of Wearing Underwear Under Pajamas?

The reasons for wearing underwear under pajamas are twofold: to protect your sensitive areas from bacteria and provide an extra layer of warmth and comfort. Wearing underwear wear pajamas can help prevent yeast infections, bacterial vaginosis, and urinary tract infections by keeping the skin dry and preventing sweat from accumulating in warm, moist areas. 

On the other hand, wearing tighter or synthetic underwear can actually increase the risk of vaginal health issues such as infections. Loose-fitting cotton underwear can reduce irritation and regulate your body temperature while sleeping.

Some people feel better wearing something underneath their pajamas – regardless of whether it’s for protection or additional warmth. Ultimately, it’s a matter of personal choice that should be based on comfort levels and individual needs.

Factors to Consider

1. Personal Preference

Personal preference is a key factor when deciding whether or not to wear underwear under pajamas or pants. Some prefer underwear's added support and protection, while others find it uncomfortable and unnecessary.

Advantages and disadvantages of wearing underwear or underpants, or pajamas based on personal preference:


  • Added layer of protection
  • Feeling of security
  • Personal hygiene


  • Uncomfortable
  • Restriction of movement
  • Skin irritation

2. Fabric of Pajamas

Pajamas come in various fabrics, including cotton, silk, flannel, and synthetic materials. Each fabric has properties that can impact most women deciding to wear underwear.

Factors to consider when choosing to wear underwear based on pajama fabric:

  • Breathability: Cotton and silk pajamas are breathable fabrics that allow air to circulate and moisture, which can help reduce sweating and odor. Underwear may not be necessary when wearing breathable pajamas.
  • Absorbency: Flannel and synthetic fabrics are more absorbent, making underwear more necessary to protect against sweat and body oils.
  • Irritation: Some fabrics, such as wool, can irritate the skin, making underwear necessary to prevent discomfort.

3. Occasion and Setting

The occasion and setting in which you wear pajamas can also impact the decision to wear underwear. For example, sleeping in a public place, such as a hostel or dorm, may require the additional layer of protection underwear can provide.

Factors to consider when deciding to wear underwear based on the occasion and setting:

  • Privacy: In private settings, such as at home or in a hotel room, the need for underwear may be less important.
  • Climate: In hot or humid climates, wearing underwear may increase sweating and discomfort, while in colder climates, the added layer of clothes may provide warmth and comfort.
  • Type of Bed: Sleeping in a shared bed, such as with a partner or child, may require additional protection against bodily fluids or secretions, making underwear necessary.

Pros and Cons of Wearing Underwear under Pajamas

person in blue satin pajamas holding white colored dog


  • Hygiene: Wearing underwear under pajamas can help maintain better hygiene, particularly for women during menstruation. Underwear is additional protection against stains and leaks, preventing the pajamas from getting soiled. Additionally, wearing clean underwear can help prevent the growth of bacteria and reduce the risk of infections.
  • Protection: Underwear can provide an additional layer of protection against irritants, particularly for those with sensitive skin. This is particularly important for individuals who suffer from skin conditions such as eczema or psoriasis, as it can reduce the risk of irritation and inflammation.
  • Comfort: Some people find wearing underwear under pajamas provides additional comfort and support. Underwear can help keep everything in place, preventing chafing and rubbing during sleep. Additionally, the added layer can provide warmth during colder nights, making sleeping more comfortable.


  • Skin Irritation: For some individuals, wearing underwear under pajamas can cause skin irritation and discomfort, particularly if the underwear is made from an abrasive material. This can lead to itching, chafing, and even rashes, making sleeping difficult.
  • Restriction of Movement: Wearing underwear under pajamas can sometimes restrict movement and make it difficult to get comfortable, particularly for those who toss and turn during sleep. This can lead to discomfort and disrupted sleep, hurting overall health and well-being.
  • Additional Layers: Wearing underwear under pajamas means an additional layer of clothing, which can be uncomfortable, particularly during warmer nights. The added layers can cause sweating, leading to discomfort and disrupted sleep.

Alternatives to Underwear under Pajamas

woman sitting on bed wearing constellation patterned pajamas

Sleepwear with Built-in Underwear

Explanation of sleepwear with built-in underwear: Some sleepwear options, particularly for women, come with built-in underwear. This eliminates the need to wear separate underwear under pajamas at night.

Advantages and disadvantages of sleepwear with built-in underwear:


  • Reduced layers of clothing
  • Convenience
  • Comfort


  • Limited options and styles
  • May not fit properly for all people who prefer all body types
  • May require special care instructions when washing

Sleeping In The Nude

Advantages and disadvantages of going to sleep in the nude include:


  • Fewer layers of clothing
  • Increased breathability and reduced sweating
  • Reduced risk of skin irritation


  • Potential for increased chafing and discomfort
  • Reduced protection against bodily fluids and secretions
  • Limited support and potential for sagging or shifting during sleep.


Whether you choose to wear underwear under your pajamas or not is entirely a personal choice. However, if you decide to wear underwear to bed, it’s best to opt for loose-fitting underwear made with breathable cotton fabrics that don’t constrict or irritate your skin.

At Undersummers, we have a selection of exceptionally comfortable, lightweight, and breathable Shortlettes and slip shorts ideal for wearing under your sleepwear. They are moisture-wicking, keeping you cool and dry while offering excellent protection against chafing. 

Undersummers understands that every body is unique and caters to all sizes, including maternity, and our comprehensive size chart offers precise measurements to ensure an impeccable fit. Explore our collections today and find the perfect underwear to keep you cool and comfortable for a good night’s sleep.

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Meet our founder: CarrieRae

Undersummers Shortlettes were created CarrieRae's personal need for comfortable thigh protection when she was working as a teacher. In 2011, her thick thighs rubbed and she needed a comfortable solution.  Pants are blazing hot in the Houston spring/summer months, shorts are not acceptable to wear to work, so she was left with capris and dresses.  Her thighs did not support wearing dresses, thigh chafing was too uncomfortable.  The idea of wearing a breezy dress sounded so comfortable to her, that she created the solution to her problem:  The Original Lace Shortlette®️. She wanted something to wear that was a single layer, the legs stayed put, comfy, and most importantly, pretty.

CarrieRae Munson