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Black hard-shell EVA top-tube bag with clear TPU phone window and three long straps

ROCKBROS B68-US 1.7L EVA Waterproof Top Tube Bag

SKU CH-QTSR-A78MP

Holds 1.7 L of gear and phones up to 7.2 inches in a rigid, waterproof EVA shell with a touch-sensitive window and three long straps that fit any frame

  • TypeHydration & Water Bottles
  • SizeMedium
  • MaterialEVA
  • GenderFemale
  • Features?Waterproof - with Rain Cover?, ?Oversized?, ?Compact Instal
  • Load Capacity1.7 liters
  • Universal fit with three extra-long adjustable straps fits all frames
  • 7 L oversized capacity stores daily gear and 7.2-inch phones with cases
  • High-sensitivity TPU touch window plus hidden earphone port enables GPS and calls on the move
  • Hard EVA shell with seamless waterproof zippers and rain cover protects contents in any weather
  • Reflective tapes on both sides boost night-ride visibility

Universal Frame Mounting

Three extra-long adjustable straps secure the bag to any bicycle frame without measuring. The design fits all frame sizes and stays stable on rough trails while allowing quick installation and removal.

Sustained Weather Protection

High-density polyester and seamless dual waterproof zippers block rain and dirt during long rides. The included rain cover adds a second layer of protection and the rigid 3D EVA shell resists deformation and absorbs shocks on bumpy terrain.

Check Leg Clearance Before Ordering

The 1.7-litre capacity is larger than standard 1.3-litre models and may rub against your legs while pedalling. Verify that your top tube area has enough space for the oversized dimensions and that your phone with case measures under 7.2 inches.

Highlights

  • Universal fit with three extra-long adjustable straps fits all frames
  • 7 L oversized capacity stores daily gear and 7.2-inch phones with cases
  • High-sensitivity TPU touch window plus hidden earphone port enables GPS and calls on the move
  • Hard EVA shell with seamless waterproof zippers and rain cover protects contents in any weather
  • Reflective tapes on both sides boost night-ride visibility

Specifications

BrandHollywood Racks
ModelB68-k001/Usa, B68-US
Part NumberB68-US
TypeHydration & Water Bottles
SizeMedium
MaterialEVA
GenderFemale
Features?Waterproof - with Rain Cover?, ?Oversized?, ?Compact Install?, ?for 4.7-7.2" Phones?, Modern, Frame Mount
Load Capacity1.7 liters
Mounting TypeFrame Mount
Vehicle TypeBicycle

Questions about this item

Does the 1.7 L EVA shell trap heat against the top tube during long summer rides?

The hard 3D EVA shell insulates the tube, so the bag surface warms in direct sun but does not transfer noticeable heat to the frame.

What must my bike already have for the three adjustable straps to mount securely?

Any standard top-tube or frame profile works; the extra-long straps wrap around round, oval or oversized tubes without extra adapters.

Will the 7.2-inch phone window still respond to touch if I keep my older 4.7-inch device in a thick case?

Yes, the high-sensitivity TPU panel registers input through cases on phones from 4.7 to 7.2 inches, so the smaller handset remains fully usable.

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