The new thermal bottle in food-grade polyethylene material without BPA. The bottle guaranteed 4 thermal hours if filled up to 500 ml, keeps liquids and water cold twice as long as compared to normal sports bottles. Large 62 mm opening, while the 74 mm outer diameter fits any standard bottle cage. The bottle has a double function, it can be filled up to 650 ml by removing the internal cavity that digs out from thermal insulation, in this way however the bottle becomes non-thermal.