This three-piece silk set includes a pillowcase, oversized scrunchie, and skinny scrunchie for a gentler kind of beauty routine. This three-piece silk set includes a pillowcase, oversized scrunchie, and skinny scrunchie for a gentler kind of beauty routine. 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.