Gelmix® Infant Thickener, 1 Each Otoscope Heads 200 lb 90kg * Digital lightweight Style:Pair (Left & Right) 200 lb 90kg * Digital lightweight Smedley spring dynamometer offers accurate grip strength readout * Has 5 preset grip sizes * Auto captures and displays maximum grip force * Assesses results according to age and gender * Saves stores results for fast retrieval with up to 19 users * Thin and flexible construction allows for almost a full range of motion Always consult a medical professional before thickening liquids to ensure it is appropriate for infant's individual needs Gelmix is not for use with infants under 6 lbs and or born preterm currently under a corrected age of 2 weeks (42 weeks post menstrual age)