Single magnet with a diameter of 3.5 cm. The magnet is sold individually to be inserted into the pockets of the vests or inside games and balls. If the intent is to insert one in the vest and the other in the game, you have to buy two. With magnets you can create an attachment point in any area of a garment of your choice by placing two magnets one outside and one inside the garment.
Size: diameter 3.5 cm