Bioplast is a flexible synthetic material, whose bio-compatibility is proved. The material contains no nickel and can not cause allergic reactions. This is why the material supports the fast skin regeneration and is especially appropriate for beginners. Bioplast can be used with all Wildcat balls and attachments with suitable thread sizes. The Bioplast is adequate while regeneration, for usage in medical operations or as jewellery during pregnancy. It is ideal for permanent use.