Product Description:

Material: Food Grade Silicone
Temperature Resistance: -30°C - 260°C
Item Weight: 4.0 oz for baby cup; 7.5 oz for parent cup
Item Capacity: 6.8 fl oz for baby cup; 17 fl oz for parent cup
Item Size:
4.05 inch (L) x 3.07 inch (W) for baby cup; 5.43 inch (L) x 3.85 inch (W) for parent cup

NOTE:
This silicone straw cup is not so hard that it would slightly squeeze if squeeze it hard. So we don't recommend it for a very naughty little one, but it won't fray when dropped and can do the daily job. The most important thing is that it is safe for children.