... welding 3,shining inside 4,no leakage our green thermos:fashionable style 304 stainless steel thermos: basic details: *capacity:350ml;500ml *packing: ... ,FDA test , SGS , 100% BPA free,LEAD free;· Unbreakable stainless steel material & 100%leak-proof ;· No leak & easy open twist ... carry,.· It was made of high quality food grade stainless steel and no joint less structure.· Anti-corrosion Special coating ...