This is a great accessory for the Lefeet C1; useless for any other purpose though, so beware. (Well, I guess you can use it alone but it's an odd design for "just" a kickboard.) But if you have the C1, this fits perfectly and makes it really easy to swim and play. It also makes the C1 easier to handle and adds buoyancy when it's not under power. Once I ran the battery down during a long swim and was really glad to have the kickboard just to get the scooter back to shore.