This bag is big enough to make a total knitting centre. The base storage compartment holds numerous balls of yarn and has a zipped compartment either side and a clear panel for viewing without opening. A 3 ring binder located at the centre of the bag allows for zipped clear holders (1 included) for all your patterns to be kept in perfect condition. In addition a velcro strip allows for attaching additional items. The top section has 5 separate compartment, 2 of these are clear fronted with zips and one is large enough for cutting mat. The project bag is made from very hard wearing woven nylon.