SPRITZ™ Arnold Bag | Magnetic Gym Sling Bag
Built for the people who carry a Stanley.
The Arnold was already good. The Pro is for the people who want a a full Stanley 40oz in their Arnold, plus put their whole kit in alongside it, and needed it to hold. It does.
- Waterproof exterior - sweat, rain, splashback. None of it gets through.
- Extra-strong magnets - holds 30oz and 40oz tumblers, even when full
- Adjustable sling strap - crossbody carry, gym or outdoors
- Slim profile - 20x10x3cm - slimmer than the standard Arnold
- Lightweight at 450g - you will forget you are wearing it
If you have got a Stanley, a Hydro Flask, or any 30-40oz tumbler - and you are tired of carrying it in your hand or stuffing it in a bag that was not made for it - the Arnold Bag Pro is exactly what you have been looking for.
30-day money-back guarantee.
What people are saying
"Finally stopped holding my water bottle the whole session. Game changer."
"Perfect size. Phone, card, keys and bottle — that's genuinely all I need."
"Bought one for me and one for my partner. She took mine."
"Sleek enough to wear to coffee after. Not embarrassed to be seen in it."
"Finally stopped holding my water bottle the whole session. Game changer."
"Perfect size. Phone, card, keys and bottle — that's genuinely all I need."
"Bought one for me and one for my partner. She took mine."
"Sleek enough to wear to coffee after. Not embarrassed to be seen in it."
"The magnet is genuinely strong. Not once dropped in three months."
"Left my big gym bag at home and haven't missed it once."
"Fits my Stanley perfectly. The Pro is worth every penny."
"Compact, clean, magnetic — exactly what I didn't know I needed."
"The magnet is genuinely strong. Not once dropped in three months."
"Left my big gym bag at home and haven't missed it once."
"Fits my Stanley perfectly. The Pro is worth every penny."
"Compact, clean, magnetic — exactly what I didn't know I needed."
Most gym bags weren't designed for training
Everything you need. Nothing you don't.
No zipper, no clip — just snap it in.
Reach it mid-set. No digging.
Post-gym coffee sorted.
490g. You'll forget you're wearing it.
Try it. Love it. Or send it back.
Designed around the session
Your bottle. Locked in. Hands free.
Elite-grade magnets snap your bottle into place and hold it through every squat, sprint, and superset. No straps, no clips, no adjusting. Snap it in before your warm-up. Still there after your cool-down.
Everything for a session. Nothing extra.
Phone pocket you can reach mid-set. Card slot for post-gym coffee. Key clip so you stop digging. All in a compact sling that sits across your back and stays out of the way - whether you're on the rack, the treadmill, or the street.
Wear it in. Wear it out.
Adjustable sling strap, clean profile, compact enough that you don't look like you're moving house. From the weights to the coffee shop without changing your bag - or your look.
Built for your Stanley. And anything else you carry hard.
The Pro's extra-strong magnets hold a full 40oz tumbler through an entire session - tested by customers who carry a Stanley Quencher every day. Fully waterproof exterior. One colour: Black.
Arnold Bag vs Arnold Bag Pro
| Arnold Bag | Arnold Bag Pro | |
|---|---|---|
| Best for | Everyday gym, standard bottles | Stanley & Hydro Flask users |
| Bottle size | Standard 1–2L | 30oz + 40oz tumblers |
| Waterproof | — | Fully waterproof |
| Magnet strength | Standard hold | Extra-strong |
| Weight | 490g | 450g — slimmer |
| Colours | Black, Beige, Dark Pink | Black only |
Real people. Real results.
Zoe A
No more clutter. No more mess. My gear is finally organised. I didn’t realise how much mental energy I wasted managing my bag until this simplified it all. It makes training feel smoother.
Harry T
I do circuit training and used to drag my bag around every station. Now I just snap the Arnold Bag on and move it with me. No wasted time, no lost gear, no mess. It’s like having a gym buddy that keeps everything in order.
Liam B
The first time I clipped it to the squat rack, I thought it might slide down — but it didn’t move a millimetre. I’ve packed it heavy and it still holds. That confidence makes a huge difference during sessions.
Ash S
When the gym is packed, having gear all over the place is stressful. The Titan Bag keeps everything tight and out of the way. I’ve even had trainers ask me about it - it’s that useful.
Amanda B
Great quality! Durable material. Doesn’t get dirty. Extremely strong magnet. Front pouch is large enough for water bottle and a wallet. Love this thing and the side pockets hold my chalkless chalk. I got all the gym accessories I need in there. SPRITZ is the coolest!
Sara M
After watching videos of this on Instagram, I purchased one for my husband's birthday. The gym opened early the next morning, and he loved it. His keys, wallet, phone, and water were all in one place up off the ground. 10 out of 10, I highly recommend.
James C
At first I thought this was just another gym accessory, but now I can’t imagine training without it. My phone, bottle, towel - all right there when I need them. It’s not just about convenience, it actually makes me train with less stress.
Ben S
Very good, the material is of high quality.
Everything you need to know
What water bottles fit the magnetic holder?+
The Arnold Bag fits most standard gym water bottles up to 1–2L. The Arnold Bag Pro is built specifically for 30oz and 40oz tumblers — including the Stanley Quencher and Hydro Flask. Check the product images for sizing reference.
How strong is the magnetic closure?+
Strong enough to hold a full water bottle securely through a complete session — squats, sprints, HIIT. The Pro uses extra-strong magnets rated for a full 40oz tumbler. They engage instantly and don't release without intention.
What's the difference between the Arnold Bag and the Arnold Bag Pro?+
The Pro is waterproof, has stronger magnets, and fits 30oz and 40oz tumblers including the Stanley Quencher. If you carry a large tumbler, go Pro. The standard Arnold suits smaller bottles and comes in more colour options: Black, Beige, and Dark Pink.
What else fits inside?+
Phone, cards, keys, and your session essentials. The Arnold is designed as a compact sling — everything for a workout, nothing you don't need. If you want to carry a full kit, it pairs well with our travel organiser range.
Can I use it outside the gym?+
Absolutely. The adjustable sling strap and clean profile make it just as useful commuting, hiking, or running errands. The Arnold Bag Pro's waterproof exterior makes it especially good for outdoor and poolside use.
Is it easy to clean?+
Yes. The standard Arnold wipes clean with a damp cloth. The Arnold Bag Pro's waterproof exterior can be wiped down or rinsed after any session.
What if I don't love it?+
30-day money-back guarantee. Try it for a full month of sessions. If it doesn't earn its place, return it for a full refund — no questions asked.
Try it risk-free for 30 days
Sling it on. Train in it. Sweat in it. If the Arnold doesn't become the only thing you take to the gym, return it for a full refund. We promise it will.
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