Reliable Material Selection: these running bib holders are made of quality ABS plastic materials, which are stable and to use, and portable, 't bring extra burden and affect your athletic performance.Without Punching Holes: you can take advantage of these race bib clips to securely fasten the numbers to your shirt or jacket in an , no need to worry about these fasteners do harm to your clothes, bringing a lot of convenience to you.Practical and Convenient to Apply: adopting a button design, this race bib holder can help you quickly and accurately fix the bib on the sportswear, easy to wear and , not easy to fall off, and can be applied many times.Applicable for Many Sports: when you need to place a race number, these race number clips can help you a lot, suitable for skiing, skating, track and field, cycling, climbing, running, dancing and so forth.Compact and Safe: each marathon bib clip measures . 1.7 cm/0.67 in diameter, small dimension and light in weight, easy to store and carry, 't take up much spaces; Besides, they don't have pointed edges, reliable and safe to use.Color:Mixed ColorMaterial:plasticPackage Contents:40 * Number BuckleOnly 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.