Material: Titanium. Length: approx. 225±5mm. Weight: Approximately 15g/meal. Titanium is used in a variety of fields due to its strength, lightness, corrosion resistance, and heat resistance. Titanium is a light material with low thermal conductivity. Boundless Voyage round chopsticks are made of pure titanium and will never rust. It has excellent corrosion resistance from acids and alkalis, and is durable enough to last a lifetime. Healthy and environmentally friendly. Easy to cool, convenient to carry, perfect for picnics, camping, and everyday use! * There is no need to worry about initial defects as there is a free replacement guarantee. Due to the manufacturing process, round chopsticks and square chopsticks are not exactly the same length.