Blendtec FourSide Jar This BPA-free, 2-quart jar with an easy-open lid features all the unique Blendtec advantages Square shape Patented single-prong, cold-forged wingtip blade (nearly 3") Easy-to-read jar markings up to 32 fl oz or 4 c (with a total volume of nearly 2 qt) Shorter and half the weight of competitors' jars with comparable volume Durable, BPA-free copolyester that stands up to heavy use Ergonomic design, allowing for easy 3-way pouring Easy-open Gripper lid that allows ingredients to be added through the center opening and that vents pressure when blending hot liquids Compatible with all Blendtec consumer blenders KEY FEATURES FORGET THE WRIST WORKOUT Blendtec's extra-strong jar material is exceptionally light. So the only thing you need to worry about lifting is your next delicious blend. STAINLESS STEEL – THE PROFESSIONAL'S CHOICE Blendtec's ultra-hard stainless steel blades are cold-forged and tuned for heavy use. This allows them to be stronger and resist corrosion much better than lesser blades. SINGLE BLADE, MANY ADVANTAGES Blendtec's patented vertical wingtips and precision angles are engineered for ultimate efficiency. The distinct single-blade design allows your ingredients to fall easily in front of the blades. CURVES IN ALL THE RIGHT PLACES When you set out your Blendtec jar to dry, you'll get some extra help from gravity. Our curved bottom and drainage holes make air-drying much more effective, which extends the life of your jar. THE LID THAT DOESN'T GET IN THE WAY The vented gripper lid automatically vents steam when you're blending soups or other hot liquids. Plus, the lid's insert allows you to add ingredients on the fly. It's the ultimate convenience! NO DETAIL TOO SMALL Even the smallest parts in a Blendtec product have received big attention from our engineers. Blade assembly nut Round and smooth for easy cleaning—and—permanently attached at the factory – adding to jar safety. Bearing assembly Sonically welded into the jar for extra strength and durability. THE FIGHT AGAINST FRICTION Friction is the nemesis of all high-powered equipment. Ball bearings reduce friction so you can blend faster and quieter. It's all surrounded by a rubber mount that absorbs the shock produced by blending ice and frozen fruit. DARE TO BE SQUARE You want your ingredients to blend, not just spin around in circles. Blendtec's square jar forces your ingredients from the blade and up the jar side, and then sucks them straight back down to the blade again. CERTIFIED SAFE Blendtec jars are made from Eastman Tritan copolyester. They're BPA-free and are certified to the NSF standard for ultimate food safety in the kitchen. Plus, the material is uniquely formulated for extra-long life. NO MORE GUESSWORK Easy-to-read measuring marks help you add just the right amounts of ingredients to your Blendtec blender. CLEANABLE = LOVABLE If you've ever used a standard blender jar, you know it can be a pain to clean – especially around the grooves and under the blade. Blendtec's at-sided jars aren't just superstars at blending. They're also super easy to clean! The flat sides make it simple to scrape out remaining ingredients, and the broad single-blade design allows you to get underneath the blade for any remaining particles. No disassembly required!