Stays cold 24 Hours, Stays hot 12 hours! Oasis bottles are the perfect & most eco-freindly way to carry youralkaline water anywhere you go. These state of the art drinking bottles arehandcrafted with precision and care. The bottles are manufactured utilizing onlythe highest grade 18/304 stainless steel and 100% BPA free plastic to ensurethere will be no leaching toxins or funny aftertastes. - The unique shape and craftsmanship of the bottle provides you with quality,durability & style. Whether you are hiking, biking or walking the streetsthe Oasis bottle is a safe, functional and always healthy companion for you,your family and the environment.100% BPA-free, non-leaching & toxin-free - Unique Dual walls with vacuum-seal cap keeps liquid hot or cold for up to24 hours - High-quality food grade 18/304 stainless steel keeps liquids fresh& clean - Portable for hiking, sports, travel, in flight, gym, camping, schooland work - Economical and easy hydration – avoid