There is an uncomfortable truth about summer sleep: the fabric you wear matters more than the mattress. Poorly chosen pajama shorts — synthetic, stiff, non-breathable — can ruin hours of rest even if everything else is perfect. This guide exists so that doesn’t happen to you.
At El Búho Nocturno, we have been perfecting mens sleepwear for over a decade, rooted in the Spanish textile tradition of the 1960s. There are no shortcuts here: every stitch, every fabric, and every size is designed to help you sleep better.
1. Why fabric matters most in summer
During sleep, body temperature naturally drops between 1 and 2 degrees. It is an essential physiological mechanism: if the fabric blocks it, the body fights itself, night sweating increases, and rest quality plummets.
Cotton is the only fabric that supports this process instead of hindering it:
- Real breathability: natural fibers allow air circulation and wick moisture outside. Synthetics trap it.
- Active thermoregulation: cotton absorbs up to 27% of its weight in moisture without feeling damp on the skin.
- Touch that improves over time: unlike synthetics, cotton softens with each wash.
- Hypoallergenic: does not irritate sensitive skin or generate static electricity.
In our collection of Mens Pajama shorts, 100% of the models are made from cotton or high-cotton blends.
2. Poplin 100% cotton vs. Cotton knit: the ultimate comparison
Two fabric families, two distinct experiences. Neither is absolutely better: the right choice depends on your sleep style and tactile preferences.
| Feature | 🔵 Poplin 100% Cotton | ⚫ Knit 85% Cotton |
|---|---|---|
| Touch | Firm, plain, classic | Soft, elastic, enveloping |
| Freshness | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Elasticity | None (woven fabric) | High (fits the body) |
| Fly | ✅ Yes, two buttons covered by fabric | ❌ No (elastic waistband) |
| Pockets | ✅ Two side pockets | ✅ Two side pockets |
| Classic checkered | Plain (gray or navy blue) | |
| Sizes | M – 3XL | M – 3XL |
| Price from | 15 € | 30 € |
| Ideal profile | The classic that never gives up style | The one that prioritizes maximum comfort |
Verdict: if you sleep in a fixed position and appreciate the traditional checkered style, choose poplin. If you move a lot during sleep or seek the coolest possible feel, cotton knit is unrivaled.
3. The 6 details that make the difference
The difference between Mens Pajama shorts that last one summer and those that last ten years is not in the price: it’s in the details. These are what define the quality of El Búho Nocturno:
- Two-button fly covered by fabric — present in all poplin models. The fabric flap eliminates direct contact of the buttons with the skin. Functionality and elegance in one detail.
- Elastic waistband with tape of the same fabric — not a generic elastic, but a custom tape made from the same woven. No marks on the skin after hours of sleep, no excessive pressure in any size.
- Two side pockets on all models — without exception. Because Mens Pajama shorts are also loungewear.
- Regular loose fit — wide legs designed for total freedom of movement. Neither too tight nor excessively wide.
- Embroidered logo — not printed. Embroidery does not deteriorate with washing. Printing does.
- Thorough quality control — each unit inspected from fabric to finished product.
4. Size guide M–3XL: how to always get it right
All Mens Pajama shorts models from El Búho Nocturno are available in M, L, XL, XXL, and 3XL at no extra cost. The cut is regular loose: if you usually fall between two sizes, choose the larger one for greater comfort during sleep.
Check the complete size guide with exact waist and hip measurements for each size.
💡 Tip: cotton knit models have greater elasticity, so if you are between two sizes, you can choose the smaller size without losing comfort.
5. Colors and styles: from classic checks to minimalist plain
The palette of the summer 2026 Mens Pajama shorts collection covers all profiles:
- Checkered Poplin: navy blue, classic blue, sky blue, green, red, gray, and white. Checks of different sizes and combinations, all with the same distinctive color definition characteristic of poplin.
- Plain Knit: charcoal gray and navy blue. Minimalism taken to summer pajamas.
Looking for the complete set? Pair the Mens Pajama shorts with our Mens Pajama shirt with short sleeves. All fabrics and colors are coordinated with each other.
6. How to combine them: the perfect summer set
Mens Pajama shorts are not just for sleeping. With the right materials and design, they are also the perfect piece for summer loungewear at home. These are the combinations that work best:
- Classic summer set: checkered blue poplin shorts + short-sleeve Mens Pajama t-shirt in a coordinated solid color. The best-selling set of the season.
- Minimalist set: plain knit shorts in gray or blue + knit t-shirt in the same tone. Maximum sobriety and comfort.
- Complete summer set: explore our collection of short summer Mens Pajamas with coordinated sets ready to wear.
Prefer the long Mens Pajama for cooler nights? Discover the long Mens Pajama pants in poplin and flannel. And for winter, the winter Mens Pajamas in 100% cotton flannel are our cold season reference.
Also explore the full range of Mens Pajamas, the Mens Pajamas for transitional seasons for spring and autumn, and the exclusive velvet Mens Pajamas for the most special nights.
Complete your rest wardrobe with mens boxers in woven fabric, mens short-sleeve polos for daytime, and the premium classic Mens Pajama sets from our most distinguished line.
7. Care and maintenance to make them last for years
A good pair of Mens Pajama shorts, well cared for, lasts a decade. The instructions are simple:
- Machine wash at 30 °C, normal or delicate cycle.
- Air drying — preserves the shape, color, and elasticity of the fabric.
- Do not use bleach or harsh fabric softener — they degrade cotton fibers.
- Do not tumble dry at high temperature — poplin shrinks.
- The poplin maintains its structure and washed-out color definition wash after wash.
- The cotton knit retains its elasticity with basic care.
8. Frequently asked questions about mens pajama shorts
Which are the best pajama shorts for summer?
It depends on the preferred style. The cotton knit shorts (85% cotton) are the coolest and most elastic: ideal for very hot nights and for those who move a lot while sleeping. The 100% cotton poplin shorts are the most classic: traditional checkered pattern, two-button fly, and firm structure. Explore the full collection of mens pajama shorts.
Do the pajama shorts have pockets?
Yes, without exception. All models include two side pockets. Poplin models also feature a two-button fly covered by fabric for added functionality and elegance.
What sizes do the mens pajama shorts come in?
All models are available in M, L, XL, XXL, and 3XL with no extra charge. The fit is regular loose. Check the size guide for exact waist and hip measurements.
How long does shipping take?
Free shipping within 24 business hours on orders over €30 in the Peninsula. Free returns within 30 days, no questions asked. See full terms in our shipping policy.
Can they be used as loungewear shorts?
Absolutely. The classic checkered design and quality materials make these pajama shorts the stylish alternative to sports shorts for lounging at home.
Do you have complete summer pajamas (t-shirt + shorts)?
Yes. Explore our collection of mens summer pajama shorts with coordinated sets. You can also freely mix pieces from the mens pajama t-shirts collection.
Are there any offers or discounts available?
Yes. Check our mens pajama outlet to find previous season models at reduced prices, always with the same quality.
Mens Pajama Shorts — El Búho Nocturno
100% Cotton · Sizes M–3XL with no extra charge · High quality
🚚 Free 24h shipping (>30€ Peninsula) · 30-day returns · Trustpilot 4.7 ⭐
View the entire collection →