Meet your go-anywhere, does-everything, multi- functional fitness partner.
Let’s be real. You don’t need another piece of gym kit gathering dust—or to invest in a million different options. That’s why we’ve created a multi-tasking hero you’ll reach for (or throw, or curl, or squat), again and again.
One sandbag, four adjustable weights = limitless workouts. From your living room to the park, The55 makes functional fitness ridiculously simple. Here’s the full story behind our innovative design.
Let’s back up. What’s The55 multi-weighted sandbag?
Before we get into the BTS, here’s what you need to know about our weighted sandbag:
The55 is an all-in-one, multi-weighted sandbag that’s changing the game in functional fitness.
Fill it with sand, rocks, or water bottles for a custom load, or grab our pre-filled 25kg sandbag (complete with 4 x 6kg inserts), ready to train right out of the box.
It’s a gym in a bag that works as hard as you do.
Fill it. Lift it. Squat it.
Unfilled = load up with your own weight
Prefilled = Ready out the box with 4 x weights (6kg, 12kg, 18kg & 25kg)
THE ULTRA-CUSTOM
Unfilled 4 Chamber Multi Weighted Sandbag
The ultra-custom functional training tool for serious flexibility. Fill it yourself with sand, rocks, or gravel to create the perfect weight, and pack it up easily to take your workout to-go.
THE SIGNATURE
Prefilled Multi Weighted Exercise Sandbag 5KG – 20KG
Our best seller, ready to go. This prefilled sandbag comes with 4 adjustable inserts, so you can train at a weight that works for you including 5kg, 10kg, 15kg, 20kg – straight out of the box.
OUR STORY
15+ years in the making…
Born on the battlefield
Our founder, part of the Royal Army Physical Training Corps, was deployed in Afghanistan when he spotted a gap in field training equipment.
Inspired by a travel-ready toiletry bag (you know, the one with all the zips), he called in reinforcements: his mum and her sewing machine. Our first prototype? A pillowcase. Yes, really.
Battle Bag Deployed
With a few hundred tweaks and a whole lot of testing, that humble pillowcase became “The Battle Bag”.
It didn’t just make the cut—it smashed it.
Patent-protected and army-approved, over 800+ bags were deployed across military units.
The55 Launches
Then we thought, why should the military have all the fun? After rolling out the Battle Bag in gyms across the UK, we found a new army of followers—functional fitness fans.
That’s when The55 was born, bringing the same military-grade durability and all-in-one functionality to the masses.
The55 Goes Global
We’re taking The55 beyond the battlefield. Next stops: America and the UAE. Ready to train anywhere, anytime.
Why “55”?
When our sandbag is fully loaded, you’ve got 55lbs of pure power *mic bag drop*
Can’t shake our military roots. 55°N is the latitude of Britain, where it all began.
It’s got a ring to it, no?
Switch up your workout in seconds.
Watch to see how easy you can adjust the weight, intensity, and movement.
Ditch the clutter
No more messy home gyms. Our bag folds and rolls, to fit in the tightest of spaces (hello, under the bed). Who needs multiple sandbags when one does it all?
Train anywhere, anytime
That hotel gym? Yeah, it’ll be suss. With The55, your functional fitness routine stays on track—wherever you are.
Full-body fitness
Squats, curls, deadlifts, presses, we can keep going but you’ll be here a while. Our sandbag can hit every muscle. Now, the next move is yours.
“Absolute game-changing bit of kit, I won’t be without mine!”
Suffering from a bad case of no workout inspo?
Cue 30+ functional training workouts (and counting) from our favourite PTs. Plus, everything you need to know to up your training game
