An organizer includes a support body and organizing member mounted to the support body. The organizing member is slidable relative to the support body. A locking mechanism locks a position of the organizing member relative to the base. The locking mechanism includes a first locking member and a second locking member. The first locking member is secured by the support body and is rotatable about an axis defined by the first locking member. The first locking member includes a first engaging feature. The second locking member is provided on the organizing member and includes a second engaging feature. The first locking member is rotatable about the axis between an unlocked position where the first and second engaging features are separated and a locked position where the first and second engaging features are engaged.