The arundel mandible bottle cage has been designed for longer rides and is tough enough for any type of use constructed with a foam core this water bottle cage is super lightweight yet strong and durable the shape of the arms allows for a smaller cross section but provides 40 more bottle grabbing power than other cages some lightweight cage designs cut out the centre portion of the cage in the pursuit of saving a few grams but when a bottle is inserted the lower edge can catch on the