The majority of kids' mountain bike tyres are either overweight or under-gunned. The Snyper from Maxxis is the exception. The center knobs are ramped to decrease rolling resistance, but the aggressive side knobs will boost any little shredder's confidence in the turns. The Snyper uses their lightweight SilkShield material for puncture protection from bead-to-bead.
Silkshield: SilkShield offers protection from bead to bead whereas Silkworm is found under the tread only. SilkShield provides an additional level of protection for sidewalls in addition to under the tread.