Stock photography, photos: 3 boys on a tricycle Stock photos of 3 boys on a tricycle at playground on childerns daycare center Photograph: © Rolf Adlercreutz Click for a larger image and more information Keywords associated with this stock photo: 3, 4, 5, bike, cap, five, four, hat, kid, pedal, play, sunshine, three, together, track, tri-cycle, tricyckle, friends, pals, chums, path, summer