Sara is versatile, attractive and fully toughened for excellent durability and safety. Rocco Bormioli tempered glassware is highly resistant to thermal shock and impact. It can withstand sudden breakage caused by temperature changes on the product surface (ΔT of approx. 130°C, 266°F). It boasts greater resistance to impact, being 3 to 5 times more resistant than annealed glassware and longer life under conditions of frequent use, up to 10 times longer than annealed glassware.