This height measuring tool is designed with a self-locking feature, making it easy to use and store. The retractable design ensures it can be conveniently carried or stored when not in use. For tracking children's growth, this height ruler offers precise measurements and a sleek appearance that fits any room.Features-Color:Black-Material:ABS/PVC-Size:14.80X11.40X3.40cm/5.82X4.48X1.34in-Adjustable measurement: the retractable height ruler can measure heights up to 2 meters, making it versatile for children of all ages and heights-Capability: the design allows children to measure their height without assistance, promoting independence-Accurate tracking: provides precise height measurements, allowing parents to track their child's growth accurately and adjust their care routines as needed-Portable design: lightweight and easy to carry, this height ruler is ideal for use in various locations, including homes, schools, and medical settings-Durable and reliable: from robust abs/pvc materials, this height ruler is built to last, offering longterm reliability and performancePackage list: 1 x Height Measuring Tape