"Stylish, functional and the highest quality. Up your shake game now with Form’s new insulated stainless steel protein shaker. Perfectly smooth shakes that stay cold for up to 12 hours.Say goodbye to warm protein shakes. The new Form Insulated Stainless Steel Shaker innovates with a snap-fit agitator that fits directly into the lid, mixing a smooth shake every time, and most importantly – no annoying rattling ball!Recovery day? Don’t forget the Form Insulated Stainless Steel Shaker also doubles as a water bottle, keeping your choice of rehydration cool the whole day."