Each pillowcase is adorned with ornate initial embroidery, designed for those who like to keep it personal. Made from slipsilk, developed and refined for over ten years, it provides the ultimate combination of shine, thickness, softness and durability. Each pillowcase is adorned with ornate initial embroidery, designed for those who like to keep it personal. Made from slipsilk, developed and refined for over ten years, it provides the ultimate combination of shine, thickness, softness and durability. Proudly Australian and family-owned, Slip is renowned for its luxurious silk pillowcases and beauty products, crafted from the finest quality silk to elevate beauty sleep and minimize friction on skin and hair.