The Gain Green Bottle 500ml x2 is a set of two water bottles from the brand Gain, each with a volume of 500ml. The bottles come with screw-on lids and are designed in a vibrant green color. These water bottles are ideal for staying hydrated during sporting activities such as cycling, making them a convenient accessory for cyclists and outdoor enthusiasts. The screw-on lids ensure a secure closure to prevent leaks while on the go.