BlenderBottle® Brand ProductBPA FreeGenuineInsulated 24 Hours ColdDetachable Loop Refined Utility. Modern Design. The Radian™ Stainless Steel shaker features rock-solid insulation, a modern center-mounted spout, a detachable carry loop, and our most secure seal to date. Perfectly Smooth. Say goodbye to lumpy protein shakes. Our powerful mixing system uses the BlenderBall® wire whisk—found only in BlenderBottle® brand shakers—to deliver smooth protein and nutrition shakes with ease. Refreshingly Cold. The double-wall vacuum-insulated bottle keeps drinks icy cold for up to 24 hours, with zero condensation on the bottle. Grab & Go. The versatile carry loop detaches at the base to secure your key ring or clip the bottle to your gym bag. Made For Mixing. Accommodate over-sized scoops and clean the bottle with ease thanks to the wide-mouth design.