The Blendtec WildSide+ Jar features an extra-wide base and a narrow fifth “wild” side that helps create a fast, smooth blend. 2.56L capacity BPA-free WildSide+ Jar Vented latching lid View great recipe ideas here For large, fast blends The WildSide+ Jar combines with your Blendtec blender to maximise blending performance. It increases blending efficiency for frozen ingredients by up to 25%. Blunt safety blade is 80% thicker and ten times stronger than other blades. Patented fifth side allows for bigger, faster blends. It is made from impact-resistant, BPA-free copolyester. Smooth blending The WildSide+ Jar also features two vertical ridges on the interior walls to disrupt the blending pattern and accelerate the blend even further.