Sepia ink polysaccharide (SIP) isolated from squid and cuttlefish ink is a kind of acid mucopolysaccharide that has been identified in three types of primary structures from squid (Illex argentinus and Ommastrephes bartrami). cuttlefish Sepiella maindroni. and cuttlefish Sepia esculenta ink. Although SIP has been proved to be multifaceted. https://rbdoutlet.shop/product-category/mens-shirts/