SMITH Sidekick Jr. Mips

Our score 9.38 / 10

Research by Peter Crona Last updated Method How we research

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SMITH Sidekick Jr. Mips

Pros

  • Two youth shell ranges and a dial allow adjustment within the size that fits the child’s head.
  • Twelve vents, AirEvac integration and the visor support trail riding and compatible SMITH eyewear.

Cons

  • The XS and S ranges overlap, so children near the boundary need an actual fit comparison.
  • Extended trail coverage and an integrated visor create a bulkier shape than a low-profile road helmet.
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SMITH Sidekick Jr. Mips suits a young rider moving from neighborhood pavement to a pump track or trail and needing a child-specific MTB shell. SMITH lists YXS for 18.9-20.5 in (48-52 cm) and YS for 20.1-21.7 in (51-55 cm), both with a dial fit; the overlap means a measured head near the boundary should be checked in both sizes when possible. The helmet adds extended rear coverage, an integrated visor and 12 vents. AirEvac is designed to integrate with SMITH eyewear, so goggle or glasses compatibility matters to families who already use that gear. Its trail shell is more substantial than a minimal road profile. SMITH states that its CPSC Safety Standard for Bicycle Helmets applies to persons age 5 and older, as well as listing CE EN 1078 and AS/NZS 2063. The maker markets YXS for ages 4–8; that size guidance does not extend the stated CPSC scope to age four. After measuring, check that the helmet sits level and stable, then verify the child’s vision and strap placement before riding.