Shake things up with Ice Shaker's® 26oz. Shaker! Invested in by Mark Cuban on ABC's Shark Tank and created and used by the Gronkowski Brothers and athletes everywhere, the 26oz. Shaker is a high-quality, double wall insulated protein shaker bottle that will keep your drink cold for 30+ hours! The 26oz. Shaker features a patented, noise-free twist on agitator that is designed to blend protein powders and work as a strainer to ensure a perfect drink every time. Constructed from premium, kitchen-grade stainless steel, the 26oz. Stainless Steel Bottle will not absorb odors and is double wall vacuum insulated to keep your drinks cold for hours and prevent condensation from building up on the outside of the bottle.