This is a clear transparent TPU elastic tape that generally used for clear bra straps. We offer two types of quality: HD12030TB and HD12030TD. The essential difference between these two types is the different raw material. There is no doubt that different raw material can lead to different performance of TPU tape. So HD12030TB don't have good anti-yellowing and anti-ageing performance than HD12030TD. But both of them are eco-friendly and pass Oeko-tex Standard 100 Certificate.