The download is a trial version of the brushes pack 36 Hearts set for use in Illustrator CS5, CS4, CS3, CS2. The full set includes 100+ different heart designs for use with brushes, paths and text. The brushes are vector strokes and can be used with any size. The brushes trial version are for commercial use OK as are the full set designs.
Variant designs on a single brush are included - over 20 brush strokes are included. Same use as commercial full release set.