3 muddy and grubby designs including fun cartoon wiggly worm characters. Scratch & Sniff them for a burst of a muddy dirt scent kids will love. Perfectly sized for use with reward incentive charts, Great for teachers for rewarding excellent work in the classroom or ideal for parents for praising great behaviour at home. 4 sheets of Trend stinky stickers in 3 colourful and bright wiggly worm designs totalling 60 scratch n sniff reward that are approx 25mm each in diameter. Dirt Scented, Child friendly, acid-free, non toxic and safe to use on photo's.