Why is this the answer?

The answer is sandal because this is a very clever riddle that uses a tricky word picture to describe something you wear on your feet. When you first hear the riddle "I bind it and it walks. I loose it and it stops," you might think of a magical toy or a strange creature, but the answer is actually an everyday object you probably wear often. Let us look closely at the first part of the riddle: "I bind it and it walks." To "bind" something means to tie it up or fasten it tightly. Think about your sandals. Many kinds of sandals have straps, laces, or buckles that you have to close or fasten when you put them on your feet. When you do this, you are binding the sandal to your foot so that it stays perfectly in place. The sandal itself cannot walk, of course, because it is just a shoe. But once you have fastened it to your foot, you can walk all around! The riddle cleverly says the sandal "walks" because it moves along with you. It becomes a partner to your steps as you play, run, and go where you need to go. Now for the second part of the riddle: "I loose it and it stops." To "loose" something means to untie or unfasten it, or to let it go. This is exactly what you do when you take your sandals off. You unfasten the straps, undo the buckles, or pull the laces open. As soon as you "loose it" from your foot, the sandal cannot go anywhere. It stops moving and stays right where you left it, maybe on the floor of your bedroom or neatly by the front door. It only walks when it is bound to you and stops when it is loosed. This clever riddle uses the word "walks" in a sneaky way to describe the important job of a simple sandal. It is the action of putting on the shoe and taking it off that the riddle is describing with its rhyming clues. The words describe the steps of wearing and removing your sandal in a way that is designed to make you think hard and smile when you figure out the secret.