BioFlex is an excellent piercing material! BioFlex can be steam sterilized or autoclaved; BioFlex is highly bio-compatible. It reduces the chances of an allergic reaction to almost zero. BioFlex is adjustable. Just cut it with a sharp blade. Once the piercing has healed, the BioFlex shaft can be shortened again. BioFlex highly flexible and bends with the body for ultimate comfort. Attach Chains, Charms and BCRs to customise your bananabell.