This combination of design characteristics produces a cage that has better retention on gravel and other harsh surfaces and has proven to be the superior design when mounted on the underside of the down tube, so common in adventure riding and touring.
While classic in appearance, this material, and its manufacturing are as complex and high tech as it gets.
Oils from your hands and fingers can change the anodized color.
To revive color and/or clean the cages (and straws), use rubbing alcohol and a soft cloth.
Do not use abrasive products, this will damage the anodized finish.
Anodized titanium is only as hard as the titanium itself, and is less hard than many types of sand or abrasives found in sand and soil, including aluminum oxide and garnet which are naturally occurring and are harder than steel.
Titanium anodize continually exposed to abrasion by these sand materials will eventually scratch and begin to wear and will not be covered under warranty.
Routine cleaning of the cages and cleaning of bottles is recommended to remove any embedded abrasive particles which can accelerate this wear.