Our stainless steel water bottle uses food grade 18/8 stainless steel. Each bottle comes with a stainless steel Unibody lid made of natural bamboo. Comes in 3 sizes-20, 26 & 40 ounce. All styles come packaged in gift box. 20 & 26 ounce sizes come with neoprene insulator sleeve, 40 ounce does not. Dishwasher safe bottle, lid is hand wash only.