Your next buying step
Giro Manifest Spherical
Model: Manifest Spherical Helmet, US style 100000000500000097 · US configuration
Your choices from the finder
Review the product, then choose a seller
Compare offers for this model
An assessment scenario for an adult trail rider with a measured 57 cm circumference who requires a documented Spherical/Mips design. Giro lists Manifest S/M/L, and its shared chart covers 51–63 cm; that screen is a reason to try the exact helmet, not a fit guarantee.
Search this model on Amazon ↗Compare the exact model, package, seller, current price and return terms. Search results can include other versions.
As an Amazon Associate I earn from qualifying purchases. This is an affiliate link.
Assessment scenario: Adult trail riding with Spherical/Mips at 57 cm
An assessment scenario for an adult trail rider with a 57 cm circumference who wants Giro Spherical Technology powered by Mips. The chart suggests a Medium try-on starting point, not a fit result; the scenario does not establish CPSC compliance.
Explore this buying guide ↗Why consider this model?
- Giro identifies US style 100000000500000097 as a trail-riding half-shell and documents Spherical Technology powered by Mips, Roc Loc Trail Air, extended trail coverage and an adjustable visor.
- The exact page lists S, M and L; Giro’s adult chart maps those choices across 51–63 cm, which includes the scenario’s 57 cm measurement for screening only.
- Giro describes a rear goggle gripper, eyewear grippers and a Fidlock magnetic buckle; these are useful package distinctions to check against the intended trail setup.
Tradeoffs to weigh
- The exact current style page lists CE EN 1078 but does not state CPSC. Virginia Tech’s historic 2020-tested Manifest record says CPSC, but does not identify current style 097; current exact-version CPSC evidence remains unknown.
- Giro’s 340 g figure applies to size M and is a manufacturer statement, not an independent measurement; the page gives no numeric vent count or head-shape profile.
- The listed goggles/eyewear grippers do not establish compatibility with every goggle or eyewear model, and no hands-on fit, ventilation or protection test was performed.
Check these before ordering
- Verify the offer is the US Manifest Spherical style 100000000500000097, then check the selected size, color and actual unit identity; the observed Matte Black route exposed SKU GR-7121540.
- Check the physical helmet’s CPSC marking and instructions. Do not transfer the 2020 Virginia Tech test entry’s CPSC field to this current exact style or treat CE EN 1078 as a substitute.
- Try the exact size on using Giro’s instructions and confirm level position, retention and strap fit; a 57 cm chart match does not establish a comfortable or secure fit.
- Verify the actual package contains the expected visor, fit hardware and instructions; do not assume goggles or other photographed accessories are included, and check current recall notices and seller return terms.