This is a 3-way kids' harness with a safety lock. It can be used on the wrist, back belt, backpack, etc. When pulled, the spring part extends about 1 meter. The harness itself is lightweight and compact, weighing about 112g. The color is light blue, and it has a cushion that is gentle on the skin. The base of the spring rotates 360°, making it less likely to tangle. You can remove only the harness without taking off the child's wristband, which is convenient when you want to put it on and take it off as needed. I bought it new and checked how to put it on, but it's unused. Thank you for looking.