Drift off in luxury with Slip’s silk pillowcase, designed for smoother skin, silkier hair, and beauty sleep in style. Drift off in luxury with Slip’s silk pillowcase, designed for smoother skin, silkier hair, and beauty sleep in style. 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.