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Profile Design · Top tube storage
Slim, direct-access top tube storage for race nutrition and small ride essentials.
$110.00
PriceIn stock, ready to ship
If you want easy access to gels and ride essentials without a bulky bag sitting up in the wind, the Profile Design ATTK XL is a tidy option. Its long, narrow shape sits neatly behind the stem, gives you 290 cm³ of storage, and works with either direct-mount bosses or the supplied FPS straps.
Sold by Ashburton Cycles
Verified store
Price
$110.00
Capacity
290 cm³
Weight
125 g
Length
305 mm
The Profile Design ATTK XL is a hard-shell top tube storage solution built for riders who want quick access to nutrition without the wobble and bulk of a traditional soft bento bag. The shape is long and narrow, so it sits cleanly behind the stem, and the flexible upper design makes it easier to grab gels or small essentials while you're riding.
What makes this one especially practical is its dual mounting setup. If your bike has top tube braze-ons, you can bolt it straight on for a cleaner fit. If it doesn’t, the supplied FPS straps let you mount it to a much wider range of bikes instead. The shell is also designed so cables can pass straight through to the top tube, which is handy on bikes with front-end routing that can clash with some storage boxes.
For triathlon, TT, gravel and fast endurance road setups, this is a smart choice when you want aero-minded storage, a more secure feel than a floppy fabric bag, and a shape that stays tidy on the bike. It is not the biggest option in the category, but that’s also the point: you get enough room for ride fuel and small essentials in a package that stays sleek, stable and easy to live with.
Ideal for triathletes, TT riders and endurance road or gravel riders who want a neat top tube box for nutrition and small essentials with either bolt-on or strap mounting.

Slim aero-style profile
The long, narrow shape sits neatly behind the stem to keep storage tidy and low-bulk on race and endurance setups.
290 cm³ storage capacity
Big enough for gels, bars and small ride essentials without moving to a much larger bikepacking-style bag.
Bolt-on or strap mounting
You can fit it to bikes with direct-mount top tube bosses or use the supplied FPS straps on frames without them.
Cable pass-through shell
The shell design allows cables to route straight through to the top tube, helping it work better with bikes that have front-end cabling in this area.
Easy-access upper design
Flexible materials and large cut-outs make it easier to open and reach contents while riding.
Hard-shell stability
Compared with softer fabric bags, the moulded construction gives a more structured feel on the bike.
Protective mounting hardware included
It comes with FPS straps, bolts, a divider, gasket and frame protection strips, so you have what you need for either mounting approach.
ATTK-S Installation Guide
Profile Design
Every detail as listed by the manufacturer.

Profile Design is a cycling components brand best known for products aimed at speed-focused riding, especially in triathlon and time trial. Since 1988, the brand has built its name around aerobars, hydration systems, wheels and storage solutions designed with an emphasis on aerodynamics, fit and adjustability. The brand is widely associated with performance-oriented cockpit and storage products that help riders refine position, control and on-bike setup. Its range centres on practical equipment for athletes and riders who want organised, race-ready bikes with a strong focus on function.
Profile Design · Top tube storage

Slim, direct-access top tube storage for race nutrition and small ride essentials.
$110.00
In stockCapacity
290 cm³
Weight
125 g
Length
305 mm
Width
42 mm
If you want easy access to gels and ride essentials without a bulky bag sitting up in the wind, the Profile Design ATTK XL is a tidy option. Its long, narrow shape sits neatly behind the stem, gives you 290 cm³ of storage, and works with either direct-mount bosses or the supplied FPS straps.
The Profile Design ATTK XL is a hard-shell top tube storage solution built for riders who want quick access to nutrition without the wobble and bulk of a traditional soft bento bag. The shape is long and narrow, so it sits cleanly behind the stem, and the flexible upper design makes it easier to grab gels or small essentials while you're riding.
What makes this one especially practical is its dual mounting setup. If your bike has top tube braze-ons, you can bolt it straight on for a cleaner fit. If it doesn’t, the supplied FPS straps let you mount it to a much wider range of bikes instead. The shell is also designed so cables can pass straight through to the top tube, which is handy on bikes with front-end routing that can clash with some storage boxes.
For triathlon, TT, gravel and fast endurance road setups, this is a smart choice when you want aero-minded storage, a more secure feel than a floppy fabric bag, and a shape that stays tidy on the bike. It is not the biggest option in the category, but that’s also the point: you get enough room for ride fuel and small essentials in a package that stays sleek, stable and easy to live with.
Ideal for triathletes, TT riders and endurance road or gravel riders who want a neat top tube box for nutrition and small essentials with either bolt-on or strap mounting.
Slim aero-style profile
The long, narrow shape sits neatly behind the stem to keep storage tidy and low-bulk on race and endurance setups.
290 cm³ storage capacity
Big enough for gels, bars and small ride essentials without moving to a much larger bikepacking-style bag.
Bolt-on or strap mounting
You can fit it to bikes with direct-mount top tube bosses or use the supplied FPS straps on frames without them.
Cable pass-through shell
The shell design allows cables to route straight through to the top tube, helping it work better with bikes that have front-end cabling in this area.
Easy-access upper design
Flexible materials and large cut-outs make it easier to open and reach contents while riding.
Hard-shell stability
Compared with softer fabric bags, the moulded construction gives a more structured feel on the bike.
Protective mounting hardware included
It comes with FPS straps, bolts, a divider, gasket and frame protection strips, so you have what you need for either mounting approach.
ATTK-S Installation Guide
Profile Design