The 4.5L Cockpit Bag That Keeps Your Phone On-Screen and Your Drink Cold

The West Biking Multifunctional Handlebar Bag puts the things you reach for mid-ride right in front of you. 4.5 litres of water-resistant storage sits centred on your handlebars, with a clear TPU touch-screen window on top that runs your phone’s map, music, and calls without taking it out — for phones up to 7.0″. Three hook straps cinch it on in under a minute, no tools, and it fits the bars on most bikes, eBikes, and folding bikes.

What sets it apart from a plain phone mount is the built-in insulated liner. The main compartment works like a small cooler: a water bottle or canned drink stays cold in summer, a coffee stays warm in winter, and — the part Canadian riders will appreciate — the insulation slows the cold from draining your phone and power-bank batteries on a freezing ride. A double-zipper opening lets you pack it wide, and a top mount point takes an action camera for low, forward-facing ride footage.

It is the bag for everything you want one hand away: phone, wallet, keys, sunglasses, a snack, a tool kit, a power bank, a drink. Built from water-resistant high-density polyester to handle rain, spray, and slush. For groceries and bulkier loads, pair it with rear storage like the West Biking double pannier bag and keep this one for the essentials. Colour: Grey. Free Canada-wide shipping.

🇨🇦 Ships from Canada · Free Canada-wide shipping · Questions? 1-866-938-7580 — real humans answer

Key Features

• Clear TPU Touch-Screen Window — Up to 7.0″ — Your phone rides on top behind a clear film, and capacitive touch passes straight through it. Follow a map, skip a track, or take a call without ever unzipping the bag — navigation stays in your eyeline where it is safe to glance.
• Built-In Insulated Liner — The thermal main compartment works like a small cooler/warmer: cold drinks stay cold, hot drinks stay warm, and on a freezing ride the insulation slows the cold reaching your phone and power bank — the batteries that die fastest in a Canadian winter. Winter riding guide →
• 4.5L of Cockpit Storage — Room for the essentials you reach for mid-ride: phone, wallet, keys, sunglasses, a power bank, snacks, a compact tool kit, a folded shell, and a drink. Everything one hand away, nothing buried in a backpack.
• Double-Zipper Opening — The main compartment opens wide on a double zipper so you can pack it and find things fast, then zip it closed against rain and road spray.
• Tool-Free 3-Strap Mount — Three fixed hook-and-loop straps wrap the handlebar and stem and cinch tight — no bracket, no tools, on in under a minute. Fits the round bars on most bikes, eBikes, and folding bikes.
• Top Camera Mount — A mount point on the top of the bag takes an action camera for low, stable, forward-facing footage of your ride or commute.
• Water-Resistant Polyester Shell — Built from water-resistant high-density polyester to handle rain, spray, and slush, so your gear stays dry through everyday Canadian weather.
• Multi-Angle Viewing & Carry — The bag sits centred ahead of the stem for an easy read, and lifts off the bars in seconds to carry with you when you park.

What’s Included

• West Biking 4.5L multifunctional handlebar bag — 1 unit
• 3 fixed hook-and-loop mounting straps (attached)
• Clear TPU touch-screen phone window (built in)

What You Should Know Before Buying (Honest Take)

• Touch-through is good, not glass-perfect. The TPU window works well for maps, music, and calls, but touch is slightly less crisp than tapping a bare screen, and face/fingerprint unlock through the film can be inconsistent. Most riders just unlock once before setting off. It is a real convenience, not a flawless one.
• It is water-resistant, not a dry box. The shell and zipper handle rain and spray for normal riding. For a sustained downpour, slip anything that truly cannot get wet into a small zip-lock inside the bag — the same advice that applies to any soft bag.
• Mind the load on light bikes. A fully packed 4.5L bag adds a little weight to the bars, which you may feel as slightly heavier steering on a very light bike. For most riders on most bikes it is unnoticeable; just do not treat it as a place for heavy tools or a U-lock.
• Big phones in thick cases can be tight. The window fits phones up to 7.0″. A large phone in a bulky case may be a snug fit — measure if you run an oversized setup.
• Insulation slows heat, it does not refrigerate. The liner keeps a drink cold or warm for the length of a ride; it is not a fridge. And in direct summer sun a phone in the window can still warm up, so it is not the place to leave it baking on a hot patio.
• Colour is Grey only. One understated finish that suits most bikes — but if you were set on matching a specific frame colour, grey is the only option.

Full Specifications

Exact external dimensions and weight vary slightly by production run; if you need a precise figure before ordering, call 1-866-938-7580 and we will confirm the current stock.

Who Is This Bag For?

• Commuters who navigate by phone — Keep your route in your eyeline and your transit card, keys, and power bank zipped away within reach. The touch window means you are not fishing the phone out at every turn. Urban eBike guide →
• Day-trip and weekend riders — A cold drink in the insulated section, snacks, sunglasses, and a tool kit up front where you can reach them without stopping to dig through a pack.
• Winter and shoulder-season riders — The insulated liner helps keep your phone and power bank from dying in the cold, and keeps a hot drink warm on a frosty commute. Winter riding guide →
• Riders who film their rides — The top camera mount gives you a low, stable, forward-facing angle straight off the bars.
• Folding-bike and small-bike riders — The tool-free straps and compact footprint suit cockpits that do not have room for a rack or large frame bag.

Who this bag is NOT for: Riders who need to haul groceries, a laptop, or a full day’s cargo — 4.5L is a cockpit bag, not a load-carrier; add rear storage like the West Biking double pannier bag or a frame triangle bag for volume. Riders who only want their phone visible and nothing else — a dedicated phone holder is lighter and cheaper. And anyone needing a fully waterproof dry box for camera gear in heavy rain — this is a water-resistant soft bag, so use an inner dry pouch for the most sensitive electronics.

Pairs Well With

A handlebar bag handles the cockpit essentials; pair it with rear storage and the right phone setup to kit out a complete commuter or touring rig:

Shipping & Delivery

• Shipping: Free Canada-wide shipping
• Delivery: Standard Canada-wide delivery as per Zeus shipping policy
• Tracking: Tracking email sent once shipped
• Support: If it arrives defective, we will make it right — see our return policy or call 1-866-938-7580

Frequently Asked Questions

Can I really use my phone through the window?

Yes. Your phone sits behind a clear TPU film and capacitive touch passes through, so you can run maps, change music, or answer a call without taking it out. Honestly: touch is a little less crisp than bare glass, and face/fingerprint unlock through the film can be inconsistent — most riders unlock once before setting off. It fits phones up to 7.0″; a big phone in a thick case may be tight, and the window can fog in heavy rain, so wipe it.

What does the built-in insulation do?

The main compartment is thermal-lined, so it works like a small cooler/warmer — a drink stays cold in summer, a coffee stays warm in winter. In the cold it also slows heat loss from your phone and power bank, which helps the lithium batteries that drain fast in a Canadian winter. It is insulation, not refrigeration: it slows temperature change for the length of a ride.

How does it mount, and will it fit my bike?

Three fixed hook-and-loop straps wrap the handlebar and stem and cinch tight — no bracket, no tools, on in under a minute. It fits round handlebars on most bikes, eBikes, and folding bikes. On a very crowded cockpit (lots of cables, a big display, aero bars), just check you have a clear span of bar to strap to.

Is it waterproof?

It is water-resistant, not a sealed dry box. The high-density polyester shell, TPU window, and double zipper handle rain, spray, and slush for normal riding. For a sustained downpour, put anything that truly cannot get wet in a small zip-lock inside — standard practice for any soft bag.

How much does 4.5 litres hold?

The essentials you reach for mid-ride: phone in the window plus a wallet, keys, sunglasses, a power bank, snacks, a compact tool kit, a folded shell, and a drink. It is a cockpit bag, not a touring pannier — for groceries or a laptop, add the West Biking double pannier bag and keep this for the small stuff.

Can I mount an action camera on it?

Yes — there is a mount point on the top for an action camera, giving you a low, stable, forward-facing angle off the bars. Check the fitting matches your camera, and use your camera’s stabilisation, since a front mount picks up some road buzz.

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Zeus eBikes Canada — Free Canada-wide shipping on every order. Questions before you buy? Call 1-866-938-7580 or email milad@zeusebikes.ca — real humans answer.

Related products and guides:

• West Biking 50L Double Pannier Bag — rear-rack storage →
• Bike Triangle (Frame) Bag →
• Enclosed Universal eBike Phone Holder →
• Insulated Food Delivery Bag →
• Shop all eBike accessories →
• Best eBikes for Canadian Winter (2026) →