Authentic Starbucks Tumbler: Gorgeous Pearl White Iridescent Cup with Dome Top! Size: Venti 24oz Brand New with Tag on Bottom Marbled Effect Screw on Lid Double Insulated Reusable Straw Cold Drinks Only This double walled plastic cold cup features a shell pigment design with embossed Siren logo. A large capacity for all your hydration need and the wide tumbler makes it very easy to clean after use! New to Poshmark? Use my code: kbrose10 at checkout to get $10 off your first purchase!