If you require wristbands to be non-transferrable, the one element each wristband must have, is that it must be non-stretch. A second major feature is that it is tamper evident.
The most used wristbands are tyvek wristbands which are manufactured from DuPont’s tyvek which is a non-stretch spun bonded polyfin material. If you can stretch a wristband ( e.g. a silicone wristband ) & the material used in manufacture has a memory, that wristband is likely to be transferable & therefore is not a security wristband. Hospital ID bands & many plastic wristbands from Asia use PVC which has a memory, will stretch & then regain their original shape & will not show evidence of tampering.
When security is important plastic wristbands & tri-laminate wristbands used by Wizid provide the necessary non stretch inner layer that becomes ruffled or tamper evident if attempts are made to stretch & transfer the wristband from one patron to another.
While the outer layers are made from softer plastics the inner layer or laminate are designed not to stretch, so the wristbands will snap or display evidence of tampering which can be picked up by security.
When applying wristbands, the fit should be close enough around the wrist to slide a finger easily under the wristband to allow comfortable movement but not enough to slide off the wrist without detection.
Wristbands don’t just break, more than likely it’s been the result of an attempt to transfer the wristband or horseplay between patrons.