Manufacturer Goefun. Weight 100 GSM 180 GSM 100 GSM 100 GSM 100 GSM80 GSM 100 GSM80 GSM 100 GSM. Style Professional Plain Yellow Clasp Envelope. Unit Count 20 Count. Feature Reusable clasp Double seal Reusable clasp Double seal Reusable clasp Double seal Reusable clasp Double seal Self seal Self seal Self seal.