Key Features: Intended as a racing or sportive bottle for use in hot, conditions where keeping cool and hydrated is a constant challenge, the Ice Fly is a new concept in thermal bottles, Where as more our leisure orientated bottles such as our Nanogelite range prioritise thermal performance, the Ice Fly is designed to offer a balance of thermal insulation with a race-friendly low weight and thinner, easy-to-squeeze walls allowing rapid delivery of fluids, The Ice Fly\'s lightweight insulation is designed to be effective for up to 2 hours in keeping liquids cool and refreshing, if you need longer then check out the Ombra Nanogelite models which offer a class-leading 4 hours, Of course, carrying the Fly name this bottle has many of the features you\'d expect from the bidon that dominates the Pro Peloton, The Fly was born directly out of years of feedback from the world\'s fastest riders and the desire to create the ultimate lightweight racing bidon, Wall thickness has been pared down to the absolute minimum whilst maintaining integrity, Stripped down, 2-piece cap is light and super-fast to remove with the opening designed to easily take powder scoops, Simplified, 1-piece valve can be removed for cleaning but still delivers fluids fast, Weight: 131 grams, 100% BPA free, .