Tri-Max triple insulation for superior performance, keeps cold drinks cold for 36 hours and hot drinks hot for 8 hours.  Stainless Steel leak proof top with wide mouth for easy filling and small mouth for easy drinking/pouring.  Interchangeable with flip spout top.  Removable stainless steel tea, fruit, ice strainer. Boulder comes in 20 & 24 ounce sizes.  Great for Gardeners!   Fits in most cup holders and bike cages.  BPA Free.  18/8 Stainless Steel.  Choose from pull down menu.