Three college students in South Korea designed a special wearable fitness equipment to get rid of the huge and heavy fitness equipment we had imagined before. This kind of dumbbell named O2 magnet is quite light and can be used for strength training anytime, anywhere.

The O2 magnet dumbbell uses the principle of the same pole repulsion and different poles attraction of magnets. The O2 magnet dumbbell consists of two parts, which need to be worn on the upper arm and the lower arm respectively. A magnet is embedded in it, which can provide different levels of thrust and tension.

A total of 8 units of O2 magnet dumbbells are designed, each unit is 3kg, and the corresponding training intensity can be selected from 3 to 24kg in total. O2 magnet dumbbells solve the problem that fitness can only be played with huge and heavy machines in the gym, and even can be exercised during commuting and bus time.