The UK’s Most Popular Trainer Sizes for Women: Are You Wearing the Rig

The verdict is out - trainers have officially taken over the footwear world. Whatever the occasion, you can trust a pair of trainers to do a great job. Whether you need to run errands, catch a flight, or hang out with friends, your trainers are the easy and most efficient option.

However, let’s be honest; a pair of trainers are only comfortable when they actually fit. But many of us don't know our perfect size. How often do you stop and think, Am I even wearing the right size? We’ve all been there; squeezing into a size too small (ouch!) or flopping around in shoes that feel like boats. So, what is the most popular trainer size in the UK, and how do you find your perfect fit?

This guide breaks it all down; it covers UK’s best-selling sizes, how to wear trainers, and stylish picks from Black Tulip that combine both comfort with trendiness.

Let’s get into it!

The Roast

No matter your shoe size, these trainer fashion hacks will keep you looking stylish and feeling comfy.

Wearing the right trainer size can help you feel more comfortable and confident in your outfit.
If you’re a size 5, you are in luck as it dominates the UK market.
Is it better to size up or down in shoes? If you're between sizes, go up. Your toes will thank you.

What Is the Most Popular Trainer Size in the UK?

If you’ve ever wondered, what is the most popular trainer size in the UK, you’re not weird. In fact, you're thinking smart. The top-selling sizes are UK 5, 6, and 4.5, making them the easiest to find in stores.

Here’s a quick look at UK’s most in-demand trainer sizes:

UK Size	Popularity Ranking	Foot Length (cm)
5	Most Sold	23.7
6	Second Most Sold	24.6
4.5	Third Most Sold	23.3
7	Rising in Demand	25.1
3	Less Common	25.1

If you’re a size 5 or 6, you’re in luck because the options are endless. But if you’re a 7 or above, you might have to dig a little harder to find the perfect pair.

What Is the Average Shoe Size for Women?

The average shoe size for women in the UK is 5.5, though sizes 5 and 6 are the most widely sold.

Taller women naturally have bigger feet, so if you’ve ever asked, what is the average shoe size for a 5’10” woman in the UK? It's typically UK 7 or 8.

But let’s not forget that fit isn’t just about length. It also includes foot shape, width, and arch height all play a role in finding that perfect trainer.

Should You Size Up or Down in Trainers?

If you’ve been thinking of getting a pair of trainers and wondering if it’s better to size up or down in shoes, here’s the lowdown:

Size up if you wear thick socks or need extra wiggle room.
Stay true to size if you want a snug, sock-like fit.
If between sizes, always go half a size up because tight trainers equals painful feet.

The Willow All Day Trainers available on Black Tulip are a great example. They’re designed for comfort, so they fit true to size. But if you’re all about thick, cozy socks, sizing up might be a better call.

Are White Trainers Still Trendy?

Are white trainers still trendy? A hundred times yes! White trainers are never going out of style. They’re naturally and even effortlessly cool, match with everything, and give any outfit that fresh, clean look.

Take the Cassava Classic Tennis Trainer (White Chocolate from Black Tulip) for example. It is a classic white sneaker that pairs with literally everything.

How to style them?

Classic Look: Blue jeans plus white tee equals timeless.
Sporty Chic: Blazer plus leggings for that off-duty model vibe.
Minimalist Vibes: All-black outfit plus white trainers equals sleek contrast.

If you don’t own a pair yet, this is your sign to grab one. With the above styling ideas we bet you can't wait to own one if you don't already.

Trainers with Arch Support: Why It Matters

Not all trainers are created equal—some offer zero support, leaving your feet tired and aching after a long day.

The Arbi Sleek Sneaker in Tan (from Black Tulip) is a solid pick for anyone who needs extra arch support. The retro-inspired sneaker isn’t just stylish, it’s also designed for all-day wear.

Why is arch support important?

Reduces foot fatigue.
Improves posture and alignment.
Prevents aches and discomfort after long walks.

If you’re always on your feet, investing in trainers with arch support is a must.

Women Trainer Trends: What’s Hot in 2025?

Trainers are having a serious fashion moment, and these trends are leading the pack:

Retro Styles – Think ‘80s and ‘90s-inspired kicks.
Neutral Tones – Tan, beige, and muted greens are big.
Platform Soles – A little height, a lot of style.
Sustainable Materials – Eco-friendly sneakers are in demand.

One standout pick? The Willow All Day Trainers in Botanical Green (from Black Tulip) is lightweight, has a flexible sole and a gorgeous earthy green tone. It has a fresh take on modern trainer trends.

How to Wear Trainers the Right Way

Women trainers are all about comfort and style, together. However, getting the look right is key. So, if you're still wondering how to wear trainers the right way, we have some points below:

With Jeans & Tees – The classic, effortless combo.
With Dresses – Feminine meets casual chic.
With Tailored Pants – Business casual done right.
With Shorts – Sporty and relaxed for warm weather.

Want to improve your trainer game? Look for designer sneakers that beautifully combine fashion and function like the stylish picks from Black Tulip.

Are Trainers the Best Travel Shoes for Women?

If you’re planning a trip, trainers are hands-down the best travel shoes for women. They are:

Comfortable for long walks.
Versatile for different outfits.
Supportive enough for all-day wear.

The Cassava Classic Tennis Trainer – White Chocolate is a top-tier travel shoe—lightweight, stylish, and easy to pair with any outfit.

Important tip to note: If you’re heading on a sightseeing trip, opt for trainers with arch support—your feet will thank you later.

Guide to Sizing: How to Find Your Perfect Fit

Finding the right size isn’t just about numbers—it’s about comfort and function. Our guide to sizing will make picking your perfect size super easy.

Measure Your Feet – Use a ruler or tape for accuracy.
Consider Width – Some brands offer narrow or wide-fit options.
Try on with Socks – Always test trainers with the socks you’ll actually wear.
Walk Around – Your toes shouldn’t feel squished, and your heels shouldn’t slip.
Check Return Policies – If shopping online, make sure returns are easy in case of fit issues.