Rilsan® Clear G850 Rnew® polyamide frame. Is widely a high performance resin for demanding applications. This polymer is 100% Biobased, processed from castor oil. Rilsan® Clear G850 Rnew® is a transparent polyamide with a high thermal resistance, outstanding chemical and stress cracking resistance. This resins are ideally suited for optical solutions with high performance properties giving transparency, clarity, lightweight, flexibility, comfort and durability.