Keith Titanium Lunch Boxes Set.Material: Pure TitaniumLid Color: Orange+Gray+Pink; Light blue+Gray+Dark blueCapacity: 400ml*3pcsWeight: 102g*3 / 3.6oz*3Dimension: (D)*(H)124mm*53mm / 4.88*2.09inApplication: Can be use as lunch box, Fresh food keep container, and bowl.Originally designed for backpacking, camping and traveling, it is also great for picnic,1.Prevent the box seal tight cause by different atmospheric pressure.2.Food-grade banding cover, keep the food fresh doubly.3.Pure titanium, lightweight and stronger than steel.4.Never rust, anti-corrosion from acid and alkali.5.High resistance to extreme low and high temperature.6.Good heat transfer performance.7.Healthy, eco-friendly close to human body.Titanium is ultralight and super strong; it is eco-friendly, biocompatible and bacteria inhibitive; it is also extraordinarily hypoallergenic and exceptionally corrosion-resistant.Keith is an ISO 9001:2008 certified company (accredited by CNAS, member of IAF).It is also a GMC Certified Manufacturer (audited by TUumlV Rheinland).Keith titanium product samples passed EU Food Grade (German LFGB) test and U.S. FDA test (both undertaken by SGS).