Featuring a self-locking mechanism, this height measurement tool is for children. The retractable design allows for compact storage, and the durable construction ensures use. Ideal for tracking growth at home, this height ruler provides accurate measurements, making it a valuable addition to any household. Features -Color:Black -Material:ABS/PVC -Size:14.80X11.40X3.40cm/5.82X4.48X1.34in -Expandable range: the height ruler's retractable design allows for measurements up to 2 meters, catering to the needs of children at different growth stages -Independent use: featuring a mechanism, this height ruler empowers children to measure their height independently, enhancing their sense of responsibility -High accuracy: delivers precise height measurements, helping parents monitor their child's growth progress and make informed decisions about their health and lifestyle -Easy to carry: the compact and lightweight design ensures that the height ruler can be easily transported and used in various settings, from home to school to facilities -Sturdy construction: made from durable abs/pvc materials, this height ruler is designed to withstand regular use without damage, ensuring longevity Package list: 4 x Height Measuring Tape