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Black polyester top-tube bike bag with zipper, reflective trim and adjustable straps

ROCKBROS Top Tube Bike Bag 039BK Black 1L

SKU CH-SRXV-CNK1X

A lightweight 1 L top-tube bag with reflective details, two internal mesh pockets and an external elastic cord for quick-access storage

  • TypeHydration & Water Bottles
  • SizeMedium
  • ColorSilver
  • MaterialPolyester
  • GenderFemale
  • FeaturesWater-tight, reflective, slim, Style 1, Handlebar Mount
  • Holds phone, wallet, tools in 1 L main compartment with two internal mesh pockets
  • Opens and closes one-handed via smooth zipper while riding
  • Weighs 98 g with slim profile that avoids knee contact
  • Reflective logos and rope on both sides boost night visibility
  • Three adjustable straps mount securely to most road or mountain bike frames

Compact 1L top-tube storage

The ROCKBROS 039BK is a slim frame pouch that mounts behind the headset on road or mountain bikes. It holds a phone, wallet, keys, gloves, nutrition and a mini pump under 22 cm in a single 1 litre compartment with two internal mesh pockets and an external elastic cord.

Zipper access and reflective safety

A smooth zipper lets you open or close the main pocket with one hand while riding. Reflective logos and rope on both sides increase visibility at night, and the ripstop polyester shell resists abrasion and cleans easily after muddy rides.

Check strap fit and phone dimensions

Three adjustable straps secure the bag to the top tube; the long strap can be trimmed for a precise fit. Verify that your device measures less than 22 cm in length so it sits completely inside the compartment without interfering with knee movement.

Highlights

  • Holds phone, wallet, tools in 1 L main compartment with two internal mesh pockets
  • Opens and closes one-handed via smooth zipper while riding
  • Weighs 98 g with slim profile that avoids knee contact
  • Reflective logos and rope on both sides boost night visibility
  • Three adjustable straps mount securely to most road or mountain bike frames

Specifications

BrandHollywood Racks
ModelTop Tube Bike Bag, 039BK
Part Number039BK
TypeHydration & Water Bottles
SizeMedium
ColorSilver
MaterialPolyester
GenderFemale
FeaturesWater-tight, reflective, slim, Style 1, Handlebar Mount
Load Capacity1 liters
Mounting TypeHandlebar Mount
Vehicle TypeBicycle

Questions about this item

Is the 1 L capacity enough for a phone plus nutrition and a mini pump?

The main compartment fits a phone up to 22 cm long, wallet, keys, gels and small tools, while the outer elastic rope secures a mini pump or gloves.

Will the 98 g weight and 22 × 10 × 5.5 cm size affect knee clearance?

At 98 g the slim profile sits behind the headset and the narrow depth prevents knee rub on most road and mountain bikes.

How do the three adjustable straps attach to different top-tube shapes?

Three hook-and-loop straps wrap the top tube and headset; the long strap can be trimmed for a secure fit on various frame profiles.

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