Amazer Bottle Cleaning Brush with Long Comfort Grip Angled Tip Design Easy to Clean Corner for Swell Bottle Water Bottle Sports BottleANGLED TIP DESIGN: The bottom portion of the bristles come to an angle so you can actually hit the round connecting area that you can never reach with regular brushes. Ideal for clean sports bottle, long cups, vases, vacuum cup, kettles, jars, blenders, coffee pot and travel tumbler It's only limited by your imagination! LONG COMFORT HANDLE: The handle is large enough to comfortably hold but narrow enough to fit in the bottle's narrow opening,