Adapt Ostomy Appliance Belt, Elastic, 1 Each Test & Monitoring Medium fits those who wear MSHQ 1594XL Medium fits those who wear women's shoe sizes 8 – 9 or men's 7 – 8 * Nonin Medical's Model 7500 pulse oximeter has a unique low profile design that enables it to fit easily on a tabletop or into its own carrying case * The stylish compact 7500's simple functionality minimum 16 hour battery life 4 hour quick recharge and minimum or 70 hours of memory makes it well suited for a variety of clinical and homecare applications * Like all Nonin portable oximeters the 7500 provides a wide variety of display indicators that provide reliable readings * Over 70 hours of memory available for extended monitoring * PureSAT© pulse oximetry technology This ostomy appliance belt is designed for use with pouches that are equipped with belt tabs and it's both washable and reusable for your convenience