GIANT Rail Helmet - MIPS Size:- Small (51-55cm) Compatible with Presta pump heads

Compatible with Presta pump heads and most sealant injectors

Age: 5 and under

23mm wide rim profile increases tire contact patch and improves ride comfort & performance

The Seral Series includes a lumbar reservoir

Blinker light attachment and reflective patch for safety

GIANT Rail Helmet - MIPS Size:- Small (51-55cm) Compatible with Presta pump headsCreated with an all new, rounder head form for increased fit range Fully integrated, super slim Mips Air Node liner combines maximum rotational impact protection with ultra lightweight comfort In molded upper, sub and lower PC shells for optimal protective structure Optimized low and high EPS density Five star safety rating from the Virginia Tech Helmet Safety Lab Easy to adjust, dual arm, four position, snap in rear height adjustment fit system for