Bests & Worsts Reviews from Amazon

The cups say "APPROXIMATE MEASUREMENTS". They should really say measurements are for decoration only, because that is about all that they are good for. APPROXIMATE isn't even close. And, what's even worse, the difference BETWEEN measurements is different. For example, pouring from the 1 oz mark (which is significantly MORE than 1oz) twice into another cup, I would expect to get 2 oz. Nope. A little over 2. The error keeps building. I bought the cups for measuring and mixing resin, where proper ratios of resin to hardener are critical. I would NOT use these for that purpose based on the measurement errors. Additionally, the cups are extremely flimsy - standard red SOLO cups are stronger! I would NOT recommend this product.