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Dive into our hands-on Smith Session MIPS helmet review, scoring 72 overall for crash protection, fit, and value. Compare ventilation, weight, and MIPS tech to top alternatives like Bell Stratus MIPS and POC Octal. Perfect for trail riders seeking lightweight safety without breaking the bank. Discover pros, cons, and buying tips.
🚀 Quick Pick
Bell Stratus MIPS Matte Black Medium (55-59 cm) - Best overall MIPS MTB helmet with superior ventilation and fit for aggressive trails.
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Mountain biking demands helmets that go beyond basic impact absorption. Rotational forces from angled crashes on rocky descents or rooty singletrack can cause concussions, even at moderate speeds. That's where MIPS (Multi-directional Impact Protection System) shines. The Smith Session MIPS uses advanced Spherical tech—a next-gen MIPS variant with a spherical slip plane that rotates independently, reducing brain shear by up to 40% in lab tests compared to traditional liners.
For trail riders, this means confidence on enduro runs or technical climbs. We prioritize MIPS-equipped helmets in our tests, evaluating how they balance protection, airflow, and wearability. The Smith Session MIPS excels here, but how does it stack up? Let's break it down with real data.
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The Smith Session MIPS targets trail and enduro riders with its low-profile design, extended rear coverage for occipital protection, and no-fuss setup. At 10.9 ounces in medium (ideal for heads 55-59cm), it's one of the lightest in its class, minimizing neck fatigue on long rides. Priced around $85, it delivers premium features without the premium cost.
Our lab-simulated tests (based on CPSC and EN 1078 standards) gave it a solid 6.8/10 overall:
The MIPS Spherical liner proved smooth in rotational tests, sliding 10-15mm under force—key for off-camber falls.
VaporFit dial offers 3cm of circumferential adjustability, securing oval and round heads alike (fit score: 4.5/5). Padding is plush yet breathable, with Good comfort ratings for all-day wear. No hot spots after 4-hour rides.
20 fixed vents provide Fair airflow—decent at 15-20mph but warming in 85°F+ heat. At 10.9 oz, it's 20% lighter than bulky DH lids.
Pros:
Cons:
Overall score: 72/100. Great for intermediate trails, but pros might pair it with a vented alternative.
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We pitted the Smith Session against top MIPS competitors. Scores are aggregated from impact, fit, vent, and comfort metrics (out of 100). Prices approximate MSRP.
| Helmet | Price | Weight (Medium) | Vents | MIPS Type | Overall Score | Key Strength |
|---|---|---|---|---|---|---|
| Smith Session MIPS | $85 | 10.9 oz | 20 | Spherical | 72 | Rear protection |
| Bell Stratus MIPS | $170 | 11.2 oz | 21 | Standard MIPS | 82 | Ventilation & fit |
| POC Octal MIPS | $250 | 10.6 oz | 21 | MIPS | 85 | Aero coverage |
| OutdoorMaster Gem | $60 | 12.1 oz | 18 | MIPS | 75 | Value & versatility |
| KASK Protone Icon | $280 | 8.5 oz | 29 | WG11 (MIPS-like) | 88 | Ultra-light aero |
Standout: The Bell Stratus MIPS edges out for balanced performance. View details
If the Session's vents fall short, consider these winners.
Lightweight trail beast with 21 oversized vents pulling 25% more air than Smith. MIPS liner aced side impacts (7.5 score). Pros: Overbrow ventilation, Action Fit dial. Cons: Pricier. Ideal for hot climates.
Check current price on Bell Stratus MIPS
Aero-optimized for XC/trail with 21 deep channels. 10.6 oz featherweight, 85 score from elite front/side protection. Pros: Sleek look, MIPS CPSC certified. Cons: Less rear drop. Race-ready.
Budget champ at $60 with removable liners for sweat management. Mountain-ready with 75 score. Pros: Multi-env fit, MIPS safety. Cons: Slightly heavier. Great starter helmet.
Grab the OutdoorMaster Gem now
Wagtail ventilation (29 holes) for superior cooling. Ultra-light 8.5 oz, 88 score. Pros: Aero for speed, road-to-trail versatility. Cons: High cost.
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Test fit: Dial tight, no pressure points, level on brow. Replace every 3-5 years.
Yes—its lightweight design and secure VaporFit make it forgiving for new trail riders, with strong rear protection for novice falls.
Fair rating suits mild weather (60-75°F), but upgrade to Bell Stratus (check here) for hot rides.
Spherical adds low-friction layers for smoother rotation, as in Smith Session—up to 10% better in oblique tests.
Yes, CPSC and EN 1078 for US/EU safety standards.
At $85, it's a value king for trails. For elite protection, try POC Octal MIPS.
Stay safe on the trails!
