Tying shoelaces is a hassle! They come undone easily! Can't tie shoelaces! Zubits solves it all. A new generation shoe fitting system that uses magnets to secure your shoes without tying laces. Once you secure your shoes with Zubits, you'll never have to tie them again. M size (magnetic force equivalent to 6kg) / For children 9 years and older and people who exercise / For running and training at the gym