If life gives you lemons... make sure they are as cute as the ones on this Qwetch bottle!DESCRIPTIONKeeps 12h Hot / 24h Cold.Internal and external walls made from stainless steel 304 (18/8).Great resistance to corrosion and impacts.Internal wall without any coating or lacquer (unlike aluminum containers).Does not alter flavors and taste.Inner part of the lid is made of stainless steel 304 (18/8).Hand wash in warm soapy water.