This is the summary of consumer reviews for BlenderBottle Classic 20 oz. and 28 oz.. The BoolPool rating for this product is Excellent, with 4.60 stars, and the price range is $6.53-$9.99.

The BlenderBottle Classic is made of heavy plastic with embossed ounce/milliliter markings, large drink/pour spout and wide mouth. The stainless steel BlenderBall wire whisk is the heart beat of this bottle. Simply drop the ball in the bottle with all ingredients, screw the lid firmly on the cup and press the flip cap tightly till the snap is heard to avoid leaks or spills, and then shake well. The ball moves freely throughout the bottle mixing even the thickest ingredients with ease leaving no room for any chunks or lumps. The ball is designed to stay in the bottle along with the contents making it safe to consume. The GripperBars make it easy to hold for the best mixing action. These bottles can be used from 8 to 28 ounce capacity and are dishwasher safe, making them easy to clean. The bottles are BPA-free and easily fit in most car cup holders.

However, the BlenderBottles are not microwave safe and are not suitable for warm or hot liquids as it may build up pressure within the bottle causing the flip cap to open unexpectedly spraying the contents all over. It is also seen that it is difficult to get rid of protein powder smells if not cleaned immediately.

Overall, the BlenderBottle Classic has unlimited possibilities for blending great-tasting drinks or nutrition/protein shakes, salad dressing, pancake batters, yogurt smoothies, lump-free gravy, and pudding or for as simple as carrying water. It can be used in kitchen, offices, gym or while travelling. The bottle is surprisingly effective, comes at affordable price and is available in many attractive colors.