magnetic race bib holder is an essential accessory for marathon runners. It securely fastens your race number to your running attire without the need for safety pins, preventing any damage to your clothing. Simply attach the magnetic clip to the corners of your race bib and align them with the corresponding magnets on your shirt. This ensures your number stays in place throughout the race, allowing you to focus on your performance. Features -Color:Black -Material:Plastic -Size:1.80X1.80X0.20cm/0.71X0.71X0.08in -Convenience: the magnetic buckle design allows for easy attachment of race bibs, eliminating the need for cumbersome tying steps -Stability: the bib magnet for runners has strong adsorption power, ensuring that the race bib is securely fixed to your body and not easily dislodged -Lightweight comfort: this magnetic number buckle is made with lightweight materials, it does not add any burden, allowing you to run more comfortably and freely -Versatility: suitable not only for marathon races but also for other outdoor activities such as running and cycling -Firm material: crafted from firm material, it is and can be reused multiple times Package list: 4 x magnetic bib holders