From the product description, check product page for current description, price and availability:

• The measuring cup is made of heat-resistant borosilicate glass.
• Excellent for measuring and heating liquid ingredients and for measuring loose ingredients.
• The measuring glass has good legibility of the units of measurement and is dishwasher-safe.
• The measuring cup can be used on electric ovens, gas ovens or in the microwave. It is also suitable for refrigerators and dishwashers. Place it safely in the dishwasher.
• Made of extra thin glass – Tescoma brand manufacturer quality