The Built For Athletes 45L Backpack is the only bag you need to see you through everything from trips to the gym to trips around the world. Whether you need it to carry all your kit for a tough training session or to fit in everything you need for a weekend away, this bag has got you covered. And we’ve got you too, with our exclusive Built For Athletes discount code that’ll save you 15% on your order. Just use the code GYMFLUENCERSAGENCY at the online checkout.
Built for Athletes 45L Backpack
The Built for Athletes 45L backpack is set to become your new sidekick. Whether you’re heading to the gym, catching a train, or flying out for a weekend adventure, this thing has your back. It’s big enough to carry everything you need, but not so big it feels like you’re going backpacking through the Alps. With a 45L capacity, it easily fits your gym gear, tech, food prep containers, extra layers, and still has room for your emotional support water bottle (and a backup as well actually!).
The real beauty of the bag though is that it isn’t just one big open bag. It’s been designed really thoughtfully with dedicated compartments, ultra-durable YKK zippers, and even a padded laptop section to keep your stuff organised and protected.
Let’s Talk Features
Let’s get into the nitty gritty of what makes the Built for Athletes 45L backpack an absolute must-have:
- Adjustable shaker and bottle holders – Securely holds two 1L bottles. Perfect if you’re constantly torn between pre-workout and hydration.
- Laptop compartment – Even your tech is safe thanks to the water-resistant materials and tough build.
- Ultra-tough design – Made from rip-proof fabric with triple-stitched seams and water-resistant finishes. Basically, it’s built to survive your toughest gym sessions and travel chaos.
- Loads of organised compartments – Because no one wants to dig around for their headphones at 6am.

Another feature that makes the bag perfect for people on the go is the patch section on the front that means you can easily add a bit of personality and make it easy to recognise your bag wherever you take it.
And if you don’t need to absolutely fill your bag, like on a day when you don’t need as much kit for your workout, you can use the compression straps to keep the contents secure and reduce the physical size of the bag.
Whether you’re an early bird smashing your first set before the sun’s up or you’re dashing straight from work to the gym, the Built for Athletes 45L backpack keeps you organised and good to go.
Built by Athletes, for Athletes
The Built for Athletes 45L backpack was designed with actual athletes in mind. People who move fast, live full-on, and don’t have time for flimsy bags that fall apart or can’t keep up. And this bag isn’t just gym-friendly, it’s gym-ready, travel-tough, and weekday-proof.
Plus, when a backpack is this rugged and versatile, it really does become more than just gym gear. It’s your travel bag, your overnight bag, your ‘chuck everything in and go’ kind of bag. Whether you’re hauling lifting belts and protein bars or your laptop and passport, it just works.
Final Thoughts
So, is the Built for Athletes 45L backpack worth it? If you’re someone who lives an active, fast-paced lifestyle (or wants to), it’s 100% a yes from us. With its sleek design, smart compartments, durable build, and massive 45L capacity, it ticks every box.
You can grab one from the Built For Athletes website for £119.99, but if you use the code GYMFLUENCERSAGENCY, you can take 15% off that price. So what are you waiting for? Go and get the only bag you need for everything from heading to the gym to hitting the road.