Sumikko Gurashi Silent Chopsticks and Chopstick Case Set (Chopsticks 18.0cm) ABC3 Skater Co., Ltd. Quality Indication Lid Raw Material: ABS resin Heat Resistance: 100 degrees Celsius Body Raw Material: ABS resin Heat Resistance: 100 degrees Celsius Chopsticks Raw Material: Methacrylic resin Heat Resistance: 100 degrees Celsius Cushion Raw Material: Silicone rubber Heat Resistance: 140 degrees Celsius Usage Precautions ● Do not place near fire. ● When washing by hand, use a sponge or soft cloth with dish soap and wash with lukewarm water. ● Immediately discontinue use if scratches, cracks, or chips occur. ● Do not scrub with a scouring pad or polishing powder. ● The chopsticks may become discolored by foods with strong colors or foods using synthetic coloring agents, but this does not affect the quality. ● Do not use alkaline detergents or orange oil-based detergents, as they may cause the design to peel off or discolor. ● Do not sterilize by boiling, as this may cause deformation. ● The tips of the chopsticks are pointed, so please be careful when children use them. ● Store away from direct sunlight. ● We are not responsible for any damages caused by incorrect usage. Precautions for Use in Dishwashers ● Do not use in commercial dishwashers. ● Do not stack items on top of this product. This may cause deformation. ● Please be sure to read the dishwasher's instruction manual carefully before use. ● Do not drop this product onto the heating element of the dishwasher. This may cause smoke, etc.