The Bib with Transponder is the best choice for all running events. It is made from Tyvek 75g/m². Standard sizes are 21x14.8cm (A5) and 23x20cm. Print is full color on the front and b/w on the back. The back side print can be customized partly.
The Bib with Transponder can have either one or two chips. RACE RESULT recommends one redundancy: either two chips and one timing line, or one chip and two timing lines. Many timers use one chip, main+backup for start and finish and one line for split timing points.