Chew Stixx Pencil Toppers defeat destructive oral motor grinding, lessen anxiety, improve attention / concentration, and are excellent for use in therapy or at school. The Sensory University has created an all new pencil topper using its top selling Chew Stixx Product. If your child bites, chews, or grinds, give them something safe to chew on. The Chew Stixx Pencil Topper fits any number 2 pencil, decreases lead exposure, is safe for teeth, is socially acceptable, is allowed in classrooms, increases attention, lowers anxiety levels, and has been proven to improve concentration skills in children constantly seeking sensory input. Excellent for streamline and special needs children. Package includes one smooth and one knobby surfaced topper. Not for use with children under 4 years of age.