Condensed magnetic array does not attract metal from the outside.
Zubits “Magnetic array” technology makes the strongest Neodymium magnet even stronger
Just lace Zubits magnets onto your own shoelaces. When separated, you can easily slip into a wide open shoe. Close the magnets with a click and go for a run or play sports. Quickly take your shoes off hands-free by stepping on your heel to pop out. Buy Zubits closures once and re-use them on all your new shoes. The magnets never lose strength so you never have to tie laces again.
Zubits Size #1 Kids / Some Adults / Elder Adults / Special Needs
Recommended for kids ages 5 to 8 years or adults who will not use their shoes athletically, such as for walks or going to the store. Also for elder adults or special needs individuals. If the kid is highly active or large, consider size #2.
Zubits Size #2 Adults / Teens
Recommended for ages 8 to adult for running and most recreational activity. This is the right size for most adults including a man who runs in sneakers. If you are a large adult or want to use Zubits for active sports, consider size #3.
Zubits Size #3 Large Adults / Sports
Recommended for large individuals, anyone who will use Zubits in recreational sports, larger or stiffer shoes, or anyone who wants the most secure hold for active use. People over 190lbs/85kg