100% Altec helmet review

Plenty of protection without going full-face

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Our rating 
4.5 out of 5 star rating 4.5
GBP £139.00 RRP | USD $165.00 | AUD $270.00
The Altec from 100% is its first open-face helmet

Our review

Incorporating loads of safety tech, this lid is about as protective as you can get without going full-face
Pros: Comfy and secure but not roasting hot; sharp looks and five colour options
Cons: Not cheap; Smartshock points can dig in, so try before you buy
Skip to view product specifications

The Altec is 100%’s first open-face helmet and it’s an impressive debut. It offers good coverage and feels reassuringly deep and snug-fitting when you put it on and dial-in the adjuster at the back.


The shell is made from multi-density EPS foam to help absorb the forces of both fast and slow-speed crashes. This is encased in a polycarbonate shell, which wraps around the rim for improved impact protection and durability.

Instead of a MIPS liner, 100% uses a system it calls Smartshock. This consists of 14 small elastomers that connect the liner to the shell and allow a small amount of independent movement, in a similar way to Leatt’s 360 Turbine Technology. I did notice some slight pressure points from these around the forehead, but not to an uncomfortable extent.

The Altec is distinctly less sweaty than other burly all-mountain lids I’ve tried. It has 15 large vents, including three big ones at the front that really help with airflow. The peak has three positions, so eyewear compatibility is excellent, and even in the lowest setting it’s well out of your line of sight.


For its 370g (S/M size) weight, this helmet packs in a lot of protective tech, and although the angular, slightly Space Age design may not be to everyone’s tastes, I like the way it looks.

Product Specifications


Price AUD $270.00GBP £139.00USD $165.00
Weight 370g – S/M
Brand 100 percent


Helmet type Mountain bike open face