Protein Shaker: A 26 oz. Avec Nature Shaker bottles have a BPA-free that comes with a mixing ball to help blend powders and supplementations. Leak-proof pop top that is easy to open but stays secure while shaking. Double wall vacuum insulator protecting your hands from hot or cold liquids inside the shaker. Bottle has measurement markings so it is easy to fill and a tapered design so it fits in a standard sized cup holder. Keep drinks hot for 12-18 hours and cold up to 24 hours. Laser engraving for permanent non-peeling design. Colors available: Dark Green, Creamy White, Navy. Size:24*7cm