Fusing your love of weights and wanderlust has never been easier thanks to Built For Athletes’ 45L Backpack. Here’s why.
If you lift heavy, work hard, and live out of a suitcase, you’ll know the struggle: trying to cram half your belongings into a bag that’s barely fit for toothpaste and a towel.
Built For Athletes gets it — and their Pro Series 45L Gym Backpack might just be the answer.
Whether you’re heading to a HYROX heat, catching flights, or just need a bag that actually keeps up with your lifestyle, this thing brings serious game.
Here’s why it’s the only 45L backpack worth knowing about this summer.
Right now, you can save 15% on your new travel companion with code GYMFLUENCERSAGENCY at checkout.
The 45L Backpack That Does It All
From sunrises to supersets, Built For Athletes’ 45L Pro Series has your back — quite literally.
The brand made its name crafting luggage solutions for on-the-go lifestyles that just make sense.
Built by athletes, for athletes, their range takes all the usual pain points and bugbears — then locks them away in one of the many compartments.
Their motto? Backpacks for the dedicated. And whether your summer plans involve big workouts or long-haul air miles, this is a carry solution that won’t disappoint.
Billed as the most technical bag Built For Athletes has ever created — and that’s saying something — the Pro Series 45L backpack comes loaded with features that make life refreshingly simple.
Here’s a snapshot of what it’s got to offer:
- Dedicated and fully ventilated laundry compartment (goodbye, festering smells)
- A laptop sleeve with 360-degree anti-shock cushioning
- Dual bottle holders capable of carrying 1L water bottles or a protein shaker each
- 180-degree clamshell design that opens flat — because no one likes playing backpack lucky dip
- Removable wet bag for sweaty gear
- Ultra-strong, rip-proof and waterproof fabric (we’re talking military grade)
- Reinforced YKK zips — no breakages here
- Multiple compartments, including a dedicated space for your shoes
Honestly? To call this backpack a beast would be putting it lightly. The list of perks just keeps rolling, and it’s no wonder airports across the country are dotted with these things.
The amount of kit you can safely stash inside is next-level — we’re talking streets ahead of your usual two-compartment carry-on.

It’s load tested to 30kg, which sounds like an awful lot of weight to lug around on your back. Anyone who’s ever lived the backpacker lifestyle will attest to that.
To help lighten the load, the Built For Athletes Pro Series 45L Backpack has been designed with a distributed back panel and cushioned straps.
The infinity strap system helps you adjust the compression, depending on how lightly (or not) you’ve packed — because some trips only require the essentials.
This level of functionality gives it the edge to perform just as efficiently during short gym trips or cross-continent adventures.
Who Is the 45L Backpack For?
Built For Athletes is very much a performance-forward brand — but don’t let that put you off snagging one of these beauties for travel.
With a huge capacity, 29cm depth, and rugged design, it’s comfortable in any terrain. The ergonomic blueprint also makes it a dream for anyone who loves organisation.
Living life on the fly can get a little chaotic, and those moments spent blindly rummaging for something you’re pretty sure you packed are both rage- and nerve-inducing.
This 45L backpack opens like a suitcase — minus the buckling wheels and burdening responsibility.
Your Summer Starts Here
Whether you’re chasing PBs or sunsets this summer, the Built For Athletes Pro Series 45L Backpack won’t let you down.
Priced at £199.99, it’s definitely an investment piece. But unlike a suitcase that gets used two weeks of the year before being stuffed in the attic, this is a bag that’ll prove its value day in, day out.
Want to unlock a better deal? Head to the Built For Athletes website and punch in code GYMFLUENCERSAGENCY for 15% off.
SEE ALSO: HYROX x BFA 35L Pro Backpack: What You Need To Know