FEATURES of the Klean Kanteen Stainless Loop Cap for Kanteen Wide Has a 100% stainless interior The handy attachment loop makes for multiple carry options Your mom would be happy 'cause there isn't any BPA, phthalates, lead or other toxins Super versatile little cap becuase it works on all Wide, Insulated, and Kid Kanteen Baby Bottles Dishwasher safe for those days you feel too lazy to hand wash Cap is leak proof SPECIFICATIONS of the Klean Kanteen Stainless Loop Cap for Kanteen Wide Weight: 1.625 oz Size: 2" (height) x 2.625" (width) 18/8 stainless steel interior