Walk into any gym in London this year, or join us for an early-morning session by the Atlantic in Agadir, and one thing is clear: how people dress to train has changed for good. For Muslim women and men who value coverage, the days of squeezing modesty into kit that was never designed for it are fading fast. Modest activewear has grown from a small niche into one of the most exciting corners of the fitness wardrobe, and 2026 is shaping up to be its strongest year yet.
At Optimo Lifestyle, we coach clients in the studio, online, and on retreat, so we see firsthand what works when the temperature climbs and the workout gets serious. This guide pulls together the trends we believe matter most for the year ahead, paired with the fabric science and the health context behind them, so you can build a kit that actually performs rather than one that simply looks the part.
Planning a body transformation or a fitness holiday in 2026? Spaces on our small-group retreats fill quickly.
Why Modest Fitness Fashion Is Having a Moment
There is a real story behind the trend. The World Health Organization reports that roughly 1.8 billion adults, around 31% of us, do not meet the recommended minimum of 150 minutes of moderate activity each week, and that women remain about five percentage points less active than men, a gap that has barely shifted in two decades (WHO, 2024). When the right kit removes a barrier to moving, whether that barrier is comfort, confidence, or coverage, it does more than look good. It helps people start.
The market reflects that shift. Analysts at Business Research Insights value the global modest activewear sector at roughly USD 96.8 billion in 2025, with growth projected towards USD 146 billion by 2033 (Business Research Insights, 2025). The wider activewear market sits near USD 488 billion for 2026, with the gym and fitness segment alone accounting for more than a third of revenue (Mordor Intelligence, 2026). In short, brands are finally designing for modest movers, and the quality is following the demand.
If you want the practical shopping side rather than the trend forecast, our companion guide to the best modest gymwear clothes for Muslim women is a useful next read.
1. Performance Fabrics That Earn Their Place
Sweat-Wicking and Breathable, Not Boil-in-the-Bag
The biggest leap in modest gymwear has been in the cloth itself. Older full-coverage kit trapped heat; today’s moisture-wicking knits pull sweat away from the skin and dry quickly, so a long-sleeved top no longer means a soaked one. On our retreats we coach in real heat, and breathable layering has been the single most reliable upgrade clients make to their training comfort.
Sun-Smart Coverage for Outdoor Training
Here is where coverage becomes a quiet health advantage. The Skin Cancer Foundation notes that clothing is one of the most effective forms of sun protection, and that a fabric rated UPF 50 blocks 98% of the sun’s rays while letting only 2% through (Skin Cancer Foundation). From May 2025 the Foundation also raised the bar for its Seal of Recommendation to a minimum of UPF 50 (Skin Cancer Foundation, 2025). For anyone training outdoors in Morocco or on holiday, a long-sleeved UPF top and a covering hijab do double duty. To be clear, sun-protective clothing complements but does not replace sunscreen on exposed skin and sensible shade.
Temperature-Regulating Layers
Newer fabrics adapt to body temperature, keeping you cool through a HIIT block and warm in a cool studio. Look for flat seams that sit comfortably under layers and four-way stretch that moves with a squat or a deadlift rather than fighting it.
A quick guide to the fabrics worth your money:
| Fabric or Technology | Best For | Worth Knowing |
|---|---|---|
| Recycled polyester and elastane blend | High-sweat sessions, leggings | Wicks fast; choose tight knits for squat-proof opacity |
| UPF-rated woven tops | Outdoor and retreat training | Look for a tested UPF 50 rating, not just dark colour |
| Bamboo and Tencel blends | Low-impact days, yoga, travel | Breathable and soft; dries slower than synthetics |
2. The Sports Hijab Comes of Age
Secure, Lightweight and Built to Move
The sports hijab has matured from an afterthought into a genuine piece of performance kit. The best 2026 versions are cut from cooling, moisture-managing mesh, stay put through sprints and burpees without constant readjusting, and sit close enough to the jaw to feel secure during floor work. For many women we coach, a reliable workout hijab is the difference between dreading cardio and getting on with it.
From Niche to Mainstream
Mainstream sports brands now stock dedicated performance hijabs, and specialist hijabi sportswear labels have pushed the design standard higher still. The result is more choice, better fit, and prices that finally make sense. If you are building a wardrobe from scratch, start with two: one breathable everyday option and one heavier, fully opaque style for outdoor sessions.
Want expert guidance on training and kit that fits your faith and your goals? Our coaches put it all together on retreat.
3. Modest Gym Sets and Full-Coverage Activewear
Co-ord Sets That Do the Thinking
Matching modest activewear sets are everywhere in 2026, and for good reason. A coordinated longline top and high-waisted legging removes the daily styling puzzle and guarantees coverage stays put mid-movement. They photograph well too, which is no small thing for anyone documenting a transformation.
High-Waisted, Squat-Proof Leggings
The non-negotiable of the modern modest gym kit. High-waisted leggings with a thick, supportive waistband stay in place through lunges and stay opaque under load. Always do the bend-over test in the changing room before you buy; a quick check there saves an awkward moment later.
Longline Tops, Tunics and Sports Dresses
Tunic-length tops and modest sports dresses worn over leggings give full coverage without the bulk of layering. Cut with side splits or a relaxed hem, they move freely and read as intentional design rather than a compromise.
4. Athleisure That Works Beyond the Gym
Relaxed, Oversized and Easy
Modest athleisure continues to blur the line between training and everyday wear. Wide-leg joggers, relaxed sweatshirts and oversized hoodies cover comfortably and look considered on the school run or a coffee stop. The trick is balance: pair a roomier top with a slimmer bottom, or the other way round, so the silhouette stays neat.
Layering for a British Climate
Layering remains the most practical modest styling tool we have, and it earns its keep in unpredictable UK weather. A longline zip-through over a fitted base lets you adjust as you warm up, and packs down small for travel. For home days, our round-up of top home fitness exercises pairs nicely with comfortable, layered kit.
5. Sustainable and Ethical Activewear
Eco Fabrics Move from Fringe to Standard
Recycled fibres, organic cotton and responsibly sourced bambo blends are no longer a premium add-on. A meaningful share of shoppers now actively seek out sustainable options, and modest activewear brands have responded with recycled-content ranges and lower-waste production. Better still, these fabrics tend to be breathable and durable, so the ethical choice is often the practical one.
Buy Less, Buy Better
The most sustainable kit is the kit you keep wearing. A small capsule of well-made pieces outperforms a drawer full of fast-fashion impulse buys, both for the planet and your wallet. Look for reinforced seams, colour-fast dyes and a brand that will repair or replace.
6. Colours, Prints and Textures to Watch
Palettes for 2026 lean into earthy neutrals warmed by a few confident accents. Here is how the season tends to break down for modest training kit:
| Season | Colours and Textures |
|---|---|
| Spring | Soft sage, blush and stone in light, breathable knits |
| Summer | Crisp white, sand and pale olive in ventilated, quick-dry cloth |
| Autumn | Terracotta, deep olive and charcoal in heavier, brushed fabrics |
| Winter | Black, espresso and forest green with cosy, layered textures |
7. Modest Activewear for Men
Loose-Cut, Breathable Training Tops
Modest training kit is not only a women’s conversation. More men are choosing longer-cut, looser tops and knee-covering shorts or joggers that respect personal preference while still performing. Lightweight, sweat-wicking cloth keeps a relaxed fit from feeling heavy.
Tailored Joggers and Considered Layers
A tapered, mid-weight jogger paired with a longline tee strikes the balance between covered and sharp, on the gym floor or out and about. If you train at home, comfortable layered kit and our home workout guide for men make a simple, effective combination.
8. Inclusive and Adaptive Fitness Fashion
Size-Inclusive by Design
Brands are at last building extended ranges with the same care as their core sizes, using stretch fabrics and considered tailoring so that fit and comfort are not a lottery. Modest activewear should flatter and support every body, and 2026’s strongest labels treat that as a starting point rather than a marketing line.
Adaptive Details That Help Everyone
Magnetic closures, adjustable waistbands and easy-on hijab styles started as accessibility features and turned out to make life easier for all of us. Thoughtful design rarely stays niche for long.
9. Dressing for a Fitness Retreat: What We Pack
This is where theory meets the suitcase. Our retreats run in warm, sunny destinations, so we have learned what holds up across a week of back-to-back sessions. Our advice to clients heading to a Morocco fitness retreat, whether in Agadir or Tangier, is to pack light, breathable, and modular.
A simple modest activewear capsule for a week away:
| Essential | Why It Earns Its Spot |
|---|---|
| 2 sports hijabs | One light for indoors, one opaque and UPF-friendly for the sun |
| 3 wicking long-sleeve tops | Coverage plus fast drying between sessions |
| 2 high-waisted leggings | Squat-proof and supportive for strength work |
| 1 longline layer | Cool mornings, travel days and rest-day comfort |
| Supportive trainers | The one item never worth skimping on |
If a structured week of training, coaching and recovery appeals, our guide to the best wellness and fitness retreat destinations for Muslims is a strong place to begin, and you can browse all of our retreat packages directly.
Putting It Into Practice With a Coach
Kit is the easy part; consistency is the hard part. The right clothing lowers the friction, but a clear plan keeps you going. The WHO and CDC both recommend adults aim for 150 to 300 minutes of moderate activity each week, plus muscle-strengthening work on two or more days (WHO). That is a realistic target, and it is the backbone of how we programme.
Whether you train with us through personal fitness training in London, online coaching, or on a retreat, the principle is the same: meet you where you are, dressed in kit you trust, and build from there. You can learn more about Optimo Lifestyle and how we work, or read our breakdown of the realistic cost of a 12-week body transformation programme.
A note on health and safety
The fabric and sun-protection points above are drawn from public guidance and are for general information only. UPF clothing reduces but does not eliminate UV exposure and works best alongside sunscreen, shade and sensible timing. If you have a medical condition, are pregnant, or are new to exercise, please speak to a qualified healthcare professional before starting a new fitness programme.
The Takeaway for 2026
Modest fitness fashion has finally caught up with the people wearing it. The fabrics perform, the sports hijabs stay put, the sets remove the guesswork, and the choice has never been wider. The best approach is not to chase every trend but to build a small, reliable capsule of modest gymwear that lets you focus on the only thing that really moves the needle: turning up and training.
When you are ready to pair the right kit with the right plan, we would love to help.
Ready to transform your fitness in 2026?
Register your interest in our next London coaching intake or fitness retreat.
About Optimo Lifestyle
Optimo Lifestyle is a London-based premium fitness brand specialising in fitness retreats, body transformation experiences, personal training and online coaching. Our team works hands-on with clients in the studio and on retreat in destinations including Agadir and Tangier, which informs the practical, tried-and-tested guidance in our articles. Learn more about us.
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References and Citations
- World Health Organization (2024). Physical activity (fact sheet). Available at: https://www.who.int/news-room/fact-sheets/detail/physical-activity
- World Health Organization (2020). Guidelines on physical activity and sedentary behaviour. Available at: https://www.who.int/publications/i/item/9789240015128
- Skin Cancer Foundation. Sun-Protective Clothing. Available at: https://www.skincancer.org/skin-cancer-prevention/sun-protection/sun-protective-clothing/
- Skin Cancer Foundation (2025). Be Safe in the Sun: Seek the Seal (updated Seal of Recommendation standards). Available at: https://www.skincancer.org/blog/be-safe-in-the-sun-seek-the-seal/
- Business Research Insights (2025). Modest Activewear Market Report. Available at: https://www.businessresearchinsights.com/market-reports/modest-activewear-market-119855
- Mordor Intelligence (2026). Activewear Market Size, Share & Growth Trends. Available at: https://www.mordorintelligence.com/industry-reports/activewear-market
- Centers for Disease Control and Prevention (2025). Adult Activity: An Overview. Available at: https://www.cdc.gov/physical-activity-basics/guidelines/adults.html
