1 The bottle is made of heat resistant PP and Silicone. Blender Ball Wire Whisk makes it easy to get the ingredients well mixed through shaking the bottle. 2 Easy to shake the handheld plastic bottle, even your kids can be the chef, they will for sure whip up a smooth batter mix. 3 Can draw shapes, patterns, and creative designs through the easy-pour spout for fun. 4 Just add in soap and warm water, shake and then rinse, Super easy cleanup. Leak-proof opening, easy to squeeze and less time spent on cleaning up. 5 1000ML large capacity, for easy measurements, add ingredients, toss in the ball, and shake just in one time.