Not too wide, not too thin: our MEDIUM sunglass & mask cords with a material diameter of 3mm. Always a good choice! The 15 different designs in their blaze of colour from Pier to Lima do not only serve the Gryffindor and Slytherin fan base but above all, the exotic among us. The MEDIUM cords can be easily combined with both - fine and wide models of sunglasses. All our MEDIUM cords can be attached to your favourite mask and be used as a mask cord.