Specification Material: polyester fiber Size: width is 3/8inch£¨10mm£, length is 18 inches (total length 36 inches when unfolded) Package Includes: 6 Secure ID Lanyards Unique no-twist design ensures that your ID credentials are always displayed frontally, sturdy plastic ID hooks hold ID credentials securely in place to avoid dropping, compatible with all punched card holders. Non-magnetic and suitable for metal detectors, ideal for passing through security checks and metal detectors, suitable for security screening venues such as concerts, stadiums, airports & customs, as well as medical screening labs in hospitals. Ideal for use in medical screening in hospitals, sporting events in schools, large scale events, etc. to meet the security needs of different environments.