Jons comments

I will be honest, on my motorbike I use the trail - 9. But for everything else I use this.
This is my backpack for family activities where I have to carry all my wife's stuff. It is for carrying my kids gear to and from school on the scooter.
This bag has an extremely heavy-duty zip which opens up the main compartment. Within is a large area for throwing stuff in. The backpack also has a little pocket on the back for quick access items.

When you think of a "normal sized' backpack for every day use, then this is it. Sizes above this are specifically for people knowing they need to carry tents, cooking equipment and half a house around on their back.

FEATURES

The Quadloc™ harness transfers weight from the shoulders to the chest and body, giving all-day riding comfort, even with heavy loads.
Kriega’s signature alloy adjusters set the waist tension in seconds and eradicate loose strap ends, giving a clean, uncluttered harness design.
A heavy duty YKK® zip seals the main compartment which houses an inner sleeve pocket ideal for laptop storage.
Large reflective panels front and rear add a level of safety for night riding.
Four compression straps keep the load stable even on those tight corners.
A concealed side/front pocket gives quick access to smaller items.
A reinforced handle gives comfortable hand carry.
The inner sleeve pocket with compression straps is compatible with a hydration reservoir and/or a back protector.
Add additional waterproof storage with hook-on points for a US-Drypack.