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Get 10% off all orders over £50. Discount applied automatically at checkout.
A bike top tube bag that mounts across your crossbar and gives you a clear touchscreen window for your phone or GPS. Follow routes, check maps and control your music without stopping or digging in pockets. The main compartment holds keys, wallet, tools and snacks — everything you need is right there in front of you.
Now in its 6th generation. Years of customer feedback have given this crossbar bike bag extra fastening straps, reinforced sides, a built-in sun visor and a larger touchscreen window that fits modern phones up to 6.5 inches.
The touchscreen pocket fits phones with screens up to 6.5 inches. The pocket screen area measures 19.5cm long by 9.5cm wide.
This covers most popular phones including iPhone 14/15/16, Samsung Galaxy S23/S24, Google Pixel 7/8 and similar sized devices. Please measure your phone before ordering — a case can add a few millimetres.
Full list here: phones that fit the BTR bike phone bag.
| 5 Adjustable Straps | Unique to BTR. Keeps the top tube bag locked solid to your frame with no wobble at speed or over rough ground |
| Touchscreen Window | Soft, sensitive PVC lets you swipe, tap and zoom without removing your phone. Works with navigation apps and music controls |
| Built-in Sun Visor | Cuts glare and screen reflections so your GPS is readable in bright sunlight |
| Water-Resistant with Waterproof Zips | Water-resistant outer material with 2-way waterproof zips keeps UK showers and road spray out of your phone and kit |
| Side Opening | Zips open from the side like a book so you can reach your gear without taking the crossbar bag off the bike |
| Charging Pass-Through | Opening between the phone pocket and main storage lets you run a cable from a power bank to charge your phone mid-ride |
| Reinforced Sides | Holds shape under the weight of your phone and protects your belongings |
| Reflective Tape | Sewn-on reflective side stripes for night visibility. Not printed, so they won’t peel off |
| Key Clip & Luggage Straps | 1 key ring clip and 2 internal luggage straps to stop loose items rattling around |
Keep your phone, keys, card and wallet in one place on your bike. Glance at your route without pulling over or fumbling through pockets.
Follow GPS routes hands-free and charge your phone from a power bank through the cable pass-through. Extra room for energy bars and a multitool.
A simple way to carry essentials without wearing a backpack. The crossbar position keeps weight central and low on the bike, so handling feels natural.
A phone mount (a clip or clamp on your bars) holds just your phone. This bike top tube bag holds your phone and everything else you need to carry — keys, wallet, bank card, tools, snacks, inhaler, lip balm. Your phone sits in a protected touchscreen window with a sun visor, not exposed to rain and road grit.
Prefer it up on the handlebars? See our bike handlebar bag with phone holder — same design, handlebar-mounted.
See how other riders are using their BTR bike phone bags out on the road.
The 5 adjustable velcro straps fit standard round tubes on most road, hybrid, gravel and mountain bikes. Aero / deep-section tubes may be too wide — please measure your top tube before ordering.
It’s water-resistant. The outer material and 2-way zips are designed to keep UK showers and road spray out of your phone and kit. It’s not designed for submersion or hours of sustained heavy rain.
The touchscreen pocket fits phones up to 6.5 inches. Screen window is 19.5cm x 9.5cm. Works with iPhone 14/15/16, Samsung Galaxy S23/S24, Google Pixel 7/8 and similar. See the full phone compatibility list.
Yes. The PVC is soft enough to swipe, tap, pinch and zoom. Works with Google Maps, Strava, Komoot, Spotify and most apps. Face ID through the window can be hit-and-miss in bright sun.
No — it sits on the front of the top tube away from your knees on a standard frame. Compact sizing and low-profile straps keep it out of the way.
Yes for most riders — the 5-strap fastening is specifically designed to stop wobble. For heavy technical mountain biking we’d suggest a dedicated hardshell mount.
Wipe the outside with a damp cloth and mild soap. Let it air dry fully before storing, especially after a wet ride.
| Phone pocket screen area | 19.5cm x 9.5cm |
| Max phone screen size | 6.5 inches |
| Mounting | 5 adjustable velcro straps (crossbar / top tube) |
| Weather resistance | Water-resistant material + 2-way waterproof zips (not fully waterproof) |
| SKU | BTR422 |
Free UK delivery | Free returns via Royal Mail | Contact us for help
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United KingdomVery good experience - managed to fit clean clothing in there to avoid carrying a backpack. Access to phone screen was great and could be used on the go.
United KingdomI got this to fit my new phone which was bigger than my previous one. It holds my phone with its case well, and all the other gear I have plus room to spare. Although bigger, it’s no more intrusive than the last one. It’s well made and keeps everything dry, and I’m pleased I bought it.
United KingdomThe website gave a load of detailed information and measurements which was helpful to decide on the right product. I like the size of the phone holder (handles my Moto G100 easily) and it fits securely to the frame. The longest top frame Velcro strap was far too long but is easily trimmed with a pair of scissors and the other two were just the right length for my Merida bike frame. Good value product.
United KingdomOnly one problem. One of the straps is to short for a chunky Ebike like the cube. Apart from that problem very pleased with the product.
