Package Contents: You receive 10 pairs of running bib clips in 2 colors, 5 pairs of each color. Sufficient quantity meet your use and replacement needs. Premium Material: Our race bib clips are made of premium magnet and plastic, which is reliable and , small and , stable and not easy to fall, not easy to break or fade, and can be used for a long time. Easy To Use: First, take out our magnetic buckle and separate the magnetic buckle into two halves, then take out the number plate and align it with the fixed position, finally connect the two halves of the magnetic buckle together, the number plate can be fixed on your clothes. Suitable Size: The front diameter of running bib clip measures about 17.5mm or 0.69 inch, the back diameter is about 16mm or 0.63 inch, and the magnet diameter is about 10mm or 0.39 inch. Wide Applications: Our running bib buckles can be used for running, cycling, skiing, track and field, rock climbing, mountaineering, , marathon and other sports that require competition numbers. Colour:Yellow and White Material:plasticandmagnet Package Contents: 10pairs x running bib clips in 2 colors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.