Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Are the cups made of glass or plastic?
Document: This product is too easy to use and i can made my juice very fast and i can do different juice in each single glass blender
i used it two times since i bought it and today i went to use the large plastic container and it has a crack going up the side.... iam disappointed  the container s are not well made..i guess
Purchased the blender primarily for making individual smoothies. All in all, very disappointing product and performance. As previously noted, cheaply made -- product often leaks, difficulty in screwing plastic parts together, and blender could not handle ice cubes, rendering it useless. Bottom line is that I paid $30 for some plastic tumblers. Keep looking -- this isn't the one you want.
I noticed some reviews about sound it is rather loud but not anything unusual for blenders. I must also say it blends really quickly. It came with some extra cups and a couple of unless tops but over all nice product. The only thing I do not like is the plastic cups.
This is part of the safety design, you cannot activate the blade without the cup on it. Chip or break one of these tabs off and the cup is worthless and the unit will not work. As other reviewers have pointed out, the cups are prone to cracking and breaking if dropped. The plastic is brittle vs. pliable. I lost tabs on most of my cups after less then 20 uses, rendering them useless.
Sure the material of the cups is a light plastic, but I've not dropped any of the pieces, yet. This also includes 2 lids and rims, as well as a shaker type of cover, but I haven't mixed any dry ingredients to know how well that works. I'd recommend this Bella blender as an economical tool for someone living in tight quarters. Nice looking too.
I just bought this at Sam's Club on clearance for $14.50. First of all the plastic is # 07 which I've found is not BPA free. Also, the cups have these plastic nubs at the drinking end that fit into the base to trigger the mixing which are sharp & painful if you grab the cup wrong, especially when hand-washing. I will be returning this and getting a different personal blender.
We've had it over a year and a half now, and it's still going strong.The plastic cups do tend to crack under pressure, especially if you're crushing ice. And it's a bit noisy.I should mention that when the o-ring seal broke within a week or two, the company sent out another in the mail right away.Thank you rocket blender and thank you dear friend for giving us one. . .
I really like the concept of this blender, although I threw away most of the parts just because I only wanted it to make smoothies. But there are some issues.....First do not put this in your dishwasher. The plastic can't handle the heat and will deform. Meaning your cups/lids will become warped and you will have a poor seal when you turn your cup upside down. I will cause messy leaks that are a pain to clean up, EVERY time you use this blender.
Loved, loved this product when I bought it at Macy's on sale then after daily use for about 6 months, the plastic piece that moved the blades wore down completely. Okay, so I used it A LOT...so, since it was a good price on sale, I bought another one. This time, the motor burned out after 2 months. Now I have LOTS of cups and no motor. Love the concept and would buy another base for $15 but I can't find one without cups.
Answer: plastic