1. Material: 304 stainless steel, 201 stainless steel 2. Capacity: 600ml/800ml/1000ml 3. Using 304 stainless steel liner, healthy and safe, not easy to rust 4. The cup body is made of 201 stainless steel, which is smooth and feels good 5. The mouth of the cup is round and smooth, not hurting the mouth, and drinking water is comfortable 6. Thickened bottom, concave design, anti-slip 7. Lightweight cup body, portable handle design, more convenient to carry 8. Stainless steel cup lid, containing silicone ring to prevent water leakage 9. Dimensions: 600ml: 7.7 x 7.7 x 22.6cm, 800ml: 7.7 x 7.7 x 25.1cm, 1000ml: 8.5 x 8.5 x 27.5cm 10. Weight: 600ml: about 380 grams, 800ml: about 420 grams, 1000ml: about 570 grams