1pc 500ml multiple colour Double Wall Flask, Water Bottle with Double Wall Insulation to Keep Drinks Both Hot and Cold Half-litre capacity: the double wall flask can hold up to 500ml and is suitable for both hot and cold liquids. Temperature control throughout the day: the double-wall insulation of this bottle keeps liquids hot for up to 8 hours and cold for 12 hours. Easy screw-on opening: the insulated water bottle features a simple twist cap that provides quick and easy access, and resists leakage. Classic design: designed to stand out, the double-wall bottle comes in a matt black coloured design for a stylish look. Versatile use: pretty and practical, the versatile double wall flask is great for the gym, outdoor trekking, on-site work, college or commuting. size about26*7*3.5cm. weight about300g. colorwhiteblackredbluesilver. pack*1cup.