Set sail for sweeter dreams. This ultra-soft silk sleep mask features a playful "Welcome Aboard" design with nautical-inspired details, perfect for luxe relaxation at home or away. Set sail for sweeter dreams. This ultra-soft silk sleep mask features a playful "Welcome Aboard" design with nautical-inspired details, perfect for luxe relaxation at home or away. 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.