Heat holder and cool keepers - the Go QuickFlip and Go Flip Straw water bottles from Stanley

Keeping your hot drinks hot is one thing - and it's a thing Stanley flasks do very well - but come the summer months the bigger challenge is keeping your cold drinks cold. We took a couple of bottles from the Stanley Go range onto the hills on a blissful June day to see if they're as good at keeping drinks cool as they are at keeping them warm. And yes, they are!