MELON Urban Active Helmets Â- Breezy lightweight & more. Melon is style fun & function they offer more then just design. The latest production technologies & a wide range of features provide all the requirements for a modern urban active application. The hi-tech in-mold construction in a classic shape make it 30% lighter to comparable hard shell helmets. 3 base sizes are available each adjustable further through Coolmax® pads & adjustment system cover a range from 46-63cm. 12 air inlets air channels & a Fidlock® magnetic buckle offer class leading comfort. Unique extra: Vista Visor available in 6 colours giving UV400 protection.