backpack icon. line style. . backpack icon set. collection of high quality outline web pictograms in modern flat style

backpack icon pack bag school back line web art knapsack camping background vector set design travel isolated white education child sport black student graphic silhouette sign graduation flat hiking study college tourism luggage baggage equipment element rucksack youth pupil symbol sack traveler schoolbag casual thin object single style collection high quality outline pictograms modern icon style vector set