This amazing water bottle is stainless steel with a sleek looking shape so it can fit perfectly into your purse or pocket right along with that lipstick and mascara! This Skinny Mini otherwise known as “the lady flask” is an amazing style, something like never before. – Removable top lid. -Wide-Mouth opening. -copper insulation. -vacuum insulation. The Skinny Mini has our new and improved copper dual insulation and double walled technology, which means your tea will be hot even 12 hours later. And if you prefer ice coffee even better open your bottle after 24 hours and enjoy the cold brew! The Stainless steel construction gives you the peace of mind knowing this is one durable item that will last and last despite its elegant and dainty look.