The volume of this tank bag is fantastic. All the little elastic tie straps, Velcro and admin folder all included. Straps are plenty long enough for my Africa Twin and it doesn’t interfere with the view of my phone (handlebar mounted) or restrict if I want to stand up. The fitting is easy but there is a helpful YouTube video available, if required. Haven’t used it in the rain yet but I’m confident in its waterproof feature. Great bit of kit that looks really smart.