Package Contents: You get 10 pieces of running bib clips in 2 colors, including black and white, 5 pieces of each color. Sufficient quantity meets your needs. Premium Material: Our bib fixing clips are made of high-quality plastic and magnetic material, small, stable, reliable, and not easy to break or fade. You can use with confidence. Easy to Use: First, take out the magnetic buckle and split it 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 to quickly secure the number to your clothing without it falling off easily. Product Size: The front diameter of the running bib clip measures approximately 17.5mm (0.69in), the back diameter is approximately 16mm (0.63in), and the magnet diameter is approximately 10mm (0.39in). This product is not suitable for children aged 13 and under. Wide Applications: These running bib clips are ideal for running, skiing, track and field, cycling, rock climbing, mountaineering, marathons, and other sports requiring competition numbers. Color: Black & White Material: Plastic + Magnet Package Contents: 10 pieces × running bib clips in 2 colors Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3cm.