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Chrome Urban Ex Rolltop 18 Bag

Item #: BA226G02
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Chrome Knurled-Welded Urban Ex Rolltop 18 Bag

Chrome’s Knurled-Welded™ Waterproof Rolltop Series is a collection of lightweight all-weather bicycle bags perfect for camping, touring, or commuting. Knurled-Welded™ bags are built using a durable yet lightweight nylon that’s been RF welded at the seams for a truly waterproof seal. By welding the seams of the outershell and avoiding a zippered main compartment with a rolltop-style bag there’s no need for a secondary waterproof layer which results in a collection of lightweight bags that you wouldn’t mind carrying around all day.

The Urban Ex Rolltop 18 is a versatile backpack that works great on or off the bike. The bag can be worm like a traditional backpack or carried like a tote bag with the five-bar haul handle. A sternum strap helps stabilize and distribute the load evenly while ergonomic shoulder straps and EVA foam back panel offer some added comfort and breathability. A large main compartment and integrated iPad® sleeve provide plenty of room for your work or school essentials, while the exterior MOLLE loops allow you to attach large or bulky item on the outside for extended storage space. Constructed of a 600-denier nylon and a durable Hypalon bottom panel, the Knurled-Welded™ Urban Ex Rolltop is the premier choice in tough, lightweight, waterproof backpacks.

As with all Chrome bags, the Knurled-Welded™ Urban Ex Rolltop 18 is Guaranteed for Life.

Knurled-Welded™ Technology

Knurled Welded™ rolltops are made with a proprietary welding technology that combines RF welding with a mechanical interlock to create the toughest, lightest, 100% waterproof bags.

  • Bombproof: 800 lbs pull strength, 600 denier waterproof construction
  • Waterproof: 150% more contact surface welds than other waterproof technology
  • Lightweight: 70% lighter than traditional waterproof bags
  • Guaranteed for Life: the only 100% waterproof bag tough enough to carry our guarantee


  • Ergonomic shoulder strap design with EVA foam back panel for improved fit and breathability
  • Five-bar haul handles for tote style off-body carry
  • Sternum strap with iconic mini seatbelt buckle for load distribution


  • Dimensions: 10” wide, 22” high, 6” deep
  • Volume: 18L
  • Weight: 0.9 lb


  • Waterproof rolltop with compression straps
  • Integrated sleeve fits iPad®
  • Hypalon MOLLE loops for modular adaptability


  • Knurled RF Welds for lightweight, waterproof construction
  • Lightweight and durable, 600-denier poly upper nylon
  • Durable Hypalon bottom panel
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by PowerReviews
Chrome Urban Ex Rolltop 18 Bag

(based on 1 review)

Ratings Distribution

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Reviewed by 1 customer

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So far, amazing.

By Drew

from Philadelphia, PA

About Me Avid Cyclist

Verified Buyer


  • Durable
  • Easy to Use
  • Lightweight
  • Versatile


    Best Uses

    • Commuting
    • Long Rides
    • Mountain Bikes
    • Road Bikes

    Comments about Chrome Urban Ex Rolltop 18 Bag:

    First, know what you want. This bag is a single-compartment structured "sack". There is a small organizer that fits an iPad, a cell phone and two pens, but this won't get you very far if you want to keep some things safe (a pair of sunglasses for example). If you want to keep a travel mug in here, it will need to be a leak-proof one. I commute daily carrying a 15" Macbook Pro, usually a jacket that I bunch up and stuff in there. The bag holds a lot, but it's easy to lose track of what's at the bottom because the bucket is so deep.

    If you're looking for an extremely lightweight bag that isn't too big, this is your guy. I'm thrilled with it so far. I've done groceries, commuting, and traveling out of this bag, and it has been perfect for me.

    • Was this a gift?:
    • No

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    Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.