The Opti-Klear material is wear resistant and will bond with acrylics. OrthoEssentials launched its new Opti-Klear Aligner and Retainer materials. According to the company, the material is extra durable, wear resistant, easy to form, and will not bubble. Opti-Klear Aligner and Retainer materials reportedly allow for excellent clarity and will bond acrylics. The material is available in two diameters.