LIFESTRAW GO STAINLESS STEEL £65

Ideal in hot weather, this iteration of the steadfast LifeStraw Go also keeps water cold for hours. Its built-in straw filter protects against 99.999999% of bacteria, 99.999% of parasites and 99.999% of microplastics, chlorine and dirt with a charcoal filter to improve taste. Plus, every purchase helps provide a child with a year of safe water. VERDICT Keeps water fresh from a mountain stream cool, clean and palatable for hours.