Top 5 Activewear Trends in UK Gyms in 2026

Allen-Fitness
2025-10-08T23:32:44+01:00

The UK fitness scene is transforming faster than ever. As more people prioritise health, performance and comfort, the gym wear industry has responded with new fabrics, smarter designs and fashion-forward styles that dominate both the gym and the high street.

Whether you're a casual gym-goer, an athlete or a fitness influencer, knowing the latest activewear trends gives you an edge helping you look great, perform better and stay motivated. At Allen-Fitness, we've analysed thousands of customer preferences, top-selling products and upcoming industry shifts to bring you the Top 5 Activewear Trends in UK Gyms in 2025.

Let’s dive in.

1. Next-Generation Compression Wear (Top Trend of 2025)

Compression wear is not new, but in 2025, it has evolved into one of the biggest performance-boosting essentials for men and women in UK gyms.

Why Compression Wear Is Trending

In 2025, fitness lovers want clothing that enhances performance and looks stylish. Modern compression suits offer:

1. Increased blood flow for better endurance

2. Muscle support to reduce soreness

3. Thermo-regulating fabric for cold UK weather

4. Sharper, athletic body contouring

Men’s Compression Sets Are Especially Popular

Men across the UK are choosing full compression suits for:

Running

Weight training

Outdoor winter cardio

HIIT

If you want to boost your performance, explore our collection here:

👉 Men’s Compression Sets

2. Bold Women’s Leggings With Sculpting Technology

No trend is bigger for UK female gym-goers than sculpting leggings.

Why Women Love This Trend

2025 leggings now combine:

✔ High-waisted tummy control

✔ Seamless fabric

✔ Butt-lifting contour lines

✔ Squat-proof opacity

✔ Breathable, lightweight stretch

These leggings are now worn everywhere — gyms, cafes, errands, pilates studios and even casual outfits.

Check out the trend here:

👉 Women’s Leggings Collection

3. Sustainable Activewear (Eco-Friendly Fashion Takes Over)

The UK is shifting towards sustainability — and gym wear brands are leading the charge.

Trending Sustainable Features

1. Recycled polyester

2. Bamboo fibre blends

3. Low-impact dyes

4. Long-lasting wear durability

5. Sweat-wicking natural blends

Why It’s Popular

Consumers want gym wear that doesn’t harm the environment and withstands years of intense workouts.

Sustainable pieces now perform just as well as synthetic alternatives — making eco-friendly activewear a major 2025 trend.

4. Moisture-Wicking Winter Gym Wear (A UK Essential)

With chilly UK winters, people now invest in gym wear that keeps them warm and dry.

Popular Features in 2025

1. Thermal-lined layers for outdoor training

2. Moisture-wicking fabric to prevent sweat chill

3. Lightweight insulation

4. Breathable yet warm designs

This trend is especially strong among:

1. Runners

2. Cyclists

3. Gym-goers who walk to training

4. Outdoor winter bootcamps

Explore the collection:

👉 Winter Gym Wear (leggings, tops, compression)

5. Athleisure: From Gym to Streetwear

The line between workout clothes and everyday fashion is nearly gone in 2025.

Why Athleisure Dominates UK Style

1. It’s comfortable

2. It's stylish

3. It fits modern lifestyles

4. It pairs well with trainers

5. It works for school runs, errands and casual wear

Trending Athleisure Pieces

1. Oversized hoodies

2. High-waisted leggings

3. Seamless sports bras

4. Ribbed long-sleeve tops

5. Training joggers

Athleisure is no longer “gym wear” — it's daily wear.

6. Bonus Trend: Smart Fabrics & Tech-Enhanced Activewear

2025 introduces fabrics that are:

1. Anti-odour

2. Heat-regulating

3. UV-protective

4. Ultra stretch

5. Instant-drying

These innovations help you train harder, stay fresher and feel more supported.