At a little over 5.5 kgs the Belter sets the standard. It's worth bearing in mind that every kilo on a 3 year olds' bike is the equivalent of 4 or 5 on an adult bike. At 5 kgs lighter than most 16" bikes, that's a big difference to a child.
It's not just the weight however, everything is designed low rolling resistance. The high thread count high psi tyres, the cartridge bearing hubs and even bespoke full bearing aluminium pedals all play a part. But it is the belt drive that steals the show, a belt will never stretch like a chain, it'll never be gunked up by dirt and grease and it will be as good the day your kid has finished with it as the day they first rode it and dad doesn't have to worry about maintaining it. All components are selected to pass all obstacles as easy as possible, to get the weight is just as high as necessary and to have grip on every surface.
Suggested age 3 - 6 yrs
frame: 6061-T6 aluminium, brushed and clear coated
fork: 6061-T6 aluminium, brushed and clear coated
dropouts: forged at front and rear
drivedrain: Belt drive, aluminium chainring with bashguard
headset: 1 1/8" Aheadset, cartridge bearing
stem: Ritchey aluminium
seatpost: aluminium, 210 mm x 22.2 mm
handlebar: Ritchey Flatbar
saddle: custom made faux leather with rivets, black