SUPIMA COTTON TWILL STRETCH-TC: Hooded blouson in stretch Supima cotton twill, made with mercerized Supima cotton yarn, elasticated in the weft. Supima - Superior Pima - is the certificate of guarantee for Pima cotton of US origin. This is the finest of cottons, due to its greater length, uniformity and fibre strength. Garment dyed with the addition on a PFC free agent.