body portion for example as shown in fig2 which is a plan view of the binder laid open with the inner side 20 facing upward a strip of hook material 30 preferably about 3 4 centimeters wide is provided at the first end 24 along the height of the inner side 20 of the elasticized main body portion 12 and a strip of loop material 32 preferably about 3 4 centimeters wide is provided at the second end 26 on the outer side 22 of the elasticized main body portion 12 although fig1 and 2 show a preferred configuration of a hook and loop fastener the hook and loop material may be cut in other configurations for example on the inner side 20 of the elasticized main body portion 12 at the first end 24 can be provided one or more horizontal strips or tabs of hook material positioned vertically that cooperate with the loop material 32 to secure the binder 10 closed as another example a strip of loop material preferably about 3 4 centimeters wide may be provided along the height of the inner side 20 of the elasticized main body portion 12 at the first end 24 on the outer side 22 of the elasticized main body portion 12 at the second end 24 may be provided two or more spaced apart strips of hook material preferably about 3 4 centimeters wide running.