The perfect all rounder bag, it has heaps and heaps of space for everything you need and its made tough enough to take a sweet beating BUT soft enough nylon so that it folds down perfectly when not filled to capacity.
THIS BAG IS FRIGGIN' HUGE - don't let the pics fool you, check the dimensions below!
The Muffin features: 
One set of webbed shoulder straps
Double zip

100% (super strong) Nylon
Measures 52cm X 68cm X 29cm (WxHxD)