BEST SEAMLESS ACTIVEWEAR UNDER £45

The best kind of activewear doesn’t get in the way of a good workout – hence why seamless styles take the trophy in this department. You’ll know a seam-free contender when you see one: advanced knitting technology eliminates bulky seams, improving comfort and reducing friction. Whether you’re running, training or stretching, moving freely should feel effortless. So, that’s why we’ve pulled together the ultimate guide to shopping the best seamless activewear pieces – all under £45 – whatever your workout plans. And we even got some expert tips from Laurie Thompson – the Senior Assistant Buyer of 4505 – to help you decide what to add to your kit next.

 

WHY CHOOSE SEAMLESS ACTIVEWEAR?
The clue’s in the name. 'Because seamless styles are knitted as one piece, you get great stretch and compression, which is crucial for high-performance activities,' says Laurie. Its elastane fabric composition allows for serious stretch potential, making it ideal for everything from yoga flows to Pilates classes. Laurie adds, 'With fewer internal seams, there’s less friction and bulk to contend with while you’re moving – ideal if your skin can be sensitive to scratchy seams.' If you didn’t already know, ASOS is basically the MVP of workout gear, thanks to the 4505 range. So, it makes sense that it should be your first stop when choosing your next seamless set.

Whether it’s a spin class you’ve dragged yourself to or Hyrox training – a high-impact workout requires more support. Luckily, we’ve got plenty of sports bras that provide just that. You need something that works well under pressure – think higher compression and performance-based fabrics that wick away sweat. Cue: the Aim’n bralette. It’s perfect for when you need a little lift and to hold everything in place. Plus, its cross-back design will max out your movement. If you’re looking for something with medium support, this sports bra from 4505 is for you. Adjustable straps help to sculpt and keep things comfy, while the statement seafoam green colourway adds a fresh pop to your workout rotation.

The main rule when it comes to choosing a pair of leggings? They should look just as good on the reformer as they do at your go-to matcha spot after class. Look to adidas for your 3-stripe fix – these seamless leggings are high-waisted, providing comfortable coverage, and they come in a bright purple hue. Because activewear doesn’t have to be boring. We offer inclusive sizing with 4505, too. Our high-rise Curve leggings have been designed with a flexible fabric composition, including 6% elastane to ensure you can flex to your heart’s desire.

You might as well complete your seamless 'fit with a top. If you’re not afraid of colour, this pink Under Armour tee will make the entrance you were hoping for – the bold hue proves that function doesn’t have to look drab. Strategically placed material sits where you sweat, allowing it to wick away faster so you can stay cool and focused during any workout. Our 4505 team has also been developing wardrobe basics, 'We’ve taken those everyday shapes – like a vest or a tee – and added things like inner bra support or adjustable details, so they’re genuinely functional as well as comfortable,' says Laurie. Look at this 4505 vest for example – built-in support, clean lines, adjustable straps… just throw on a hoodie to channel athleisure energy with zero effort.

Whether you love to coordinate from head to toe or prefer mixing and matching your gym gear, our 4505 range has got you covered. Try pairing the Icon zip-up top with the seamless sculpting leggings for a classic gym look or stand out with the cherry-red cropped vest and shorts combo. Laurie's top tip: 'The fun is in the mix-and-match. Playing with different colours and textures gives you loads more outfit choices.' With most pieces priced around £20-30, you can put together an entire workout outfit – top, bottoms, sports bra, the lot – for a steal. The options? Endless.

The best activewear pieces are those that can deliver well beyond the gym as Laurie says, 'Fitness and wellness have become so central to our lives over the past decade, and activewear has become more and more integrated in our day-to-day. Our design team have to think just as much about comfort as style.' Weekday’s seamless square-neck top and flared leggings slip easily into everyday plans – coffee runs, errands, Sunday strolling – especially with silver jewellery, a grey hoodie and metallic trainers in the mix. ARKET's seamless leggings are just as adaptable – sandwich them between a funnel-neck jacket and standout trainers for a look polished enough to pass in a relaxed office. And the real beauty of seamless basics? Their minimalist look means they team with almost anything, from your favourite jeans to a sequin skirt.

When picking a seamless activewear set, comfort and performance should always come first. From stretchy fabrics to smooth, second-skin fits, these pieces should move with you while keeping you fully supported. Here’s what to keep in mind when picking your next seamless set.

WHAT MAKES A SPORTS BRA SUITABLE FOR HIGH-IMPACT WORKOUTS?
A high-impact sports bra should provide support and feature elements like wide, adjustable straps or a snug fit to keep you secure and comfortable during intense training. Look for designs that contour to your body while allowing free movement.

 

WHAT FABRICS ARE BEST FOR SWEAT AND MOISTURE MANAGEMENT?
Choose performance-based fabrics that are designed to wick moisture from your skin, like nylon, polyester and elastane. They stay breathable, stretch comfortably and help regulate temperature so you can breeze through your workout and look good, both at the same time.