Hydro Flask or Hydroflask at Trailblazer Outdoors, Pickering near York and Scarborough, they are top quality flasks for cold or hot drinks with lifetime warranty. Standard and wide mouth in multi colours. Keeping drinks hot, 6 hours or cold, 12 hours, with double wall insulation and a powder coated finish. Incredibly tough and a joy to use with no nasty tastes or taints. Fresh water in, fresh water out.