The Philips M1134A adhesive-free, single-patient wrap pulse oximetry sensor is designed to protect delicate skin while delivering a high-quality signal. It can be used on the foot or hand for neonates under 3 kg (6.6 lbs), on the big toe or thumb of children from 10-20 kg (22-44 lbs), and on the finger of adults over 40 kg (88 lbs).