I. Introducing a revolutionary new look in urban bike helmets

Our brand-new Geo is a first in urban bike helmet design. We sketched the helmet in collaboration with Dr. Holger Hoffmann, the founder of Berlin-based paper art company, Papertrophy. Its angular silhouette references the defining geometric forms of Papertrophy’s award-winning creations, producing an urban bike helmet that it is safe as it is design savvy.

The Geo reshapes the sphere of head protection with its polygonal silhouette.

The Geo’s In-Mold construction incorporates a ten hole ventilation system for ultimate climate control plus Dial-Fit system adjustability and removable sizing inserts that provide hassle-free customizable fit and comfort. A removable LED rear light and reflective detailing add to the GEO’s visibility on the road, making this the ultimate cool two-wheeler’s head protection for city riders.

Stay visible with a removable LED light and reflective details.

Initiated by our late CEO and product developer Ruedi Herger, we had the idea of an angular helmet design in our heads for a while but couldn’t bring it to life on our own. So when we discovered Papertrophy’s creations, we immediately got in touch with Holger to collaborate in the creation of this unique looking helmet.

stated Ruedi after we received the first samples.

The bike helmet for urban design lovers

II. Minimalist polygonal structure creating a noble surface texture

Papertrophy was founded in Berlin, in 2015, by Dr. Holger Hoffmann and makes paper animal trophies, that are delivered as pre-cut and pre-folded kits. The buyer then glues them together to make their own deer, elephant or rhinos, staying true to the company motto: “don’t shoot them – glue them”. The products’ look is inspired by old-fashioned animal trophies, but transformed into timeless animal-friendly form, with their minimalist polygonal structure creating a noble surface texture.

The Geo helmet and Papertrohy share the same minimalist polygonal structure.

Find a 10% discount code for your new Papertrophy wall art in the Geo helmet box.

Papertrophy has been awarded a host of international awards for its design, including the iFDesign Award 2016 and the German Design Award 2017.

And TSG are so excited to bring this design pedigree to the streets in the form of the Geo. This unique urban cycling helmet is certified to CE EN 1078 and CPSC specifications and is a key product in the 2022 summer collection.

The Geo helmet seen in the streets of Tallinn.

It is available in solid black in XXS/XS, S/M, L/XL and XXL.

So who better to share the helmet’s back story than Stephane himself.

The designer in his working environment.

I. The Helmet Guy

Stephane’s relationship with TSG was a coincidence, starting with a chance exchange of ideas at the 2019 Milan Motorcycle Expo about a DH skate helmet. “We left it there,” explains Stephane, one of the most experienced helmet designers in the industry”, and only talked again as the pandemic was taking hold of the world about a totally new project for a downhill bike helmet.” As the old axiom goes, every cloud has a silver lining, and with Stephane in lockdown and a snowmobile helmet project on ice, he had the opportunity to get busy on what would become TSG’s newest MTB DH helmet, the Sentinel.

Stephane has been designing helmets for over 25 years but mainly for power sports like snowmobile, street and MX bikes and even skydiving helmets. He is also really into FMX and enduro motorcycles, with one of his sons racing 450 MX and competing in DH mountain bike, he also knows a thing or two about downhill bike helmet design.

Stephane checks the best peak position.

II. Following a typical German Swiss product design philosophy

“First I had to immerse myself in the downhill bike world to see what the competition was up to,” explains Stephane of his process. “TSG have Swiss, German roots so I wanted to create a style that was dynamic and fast looking but also expressed technicality and functionality typical of German and Swiss engineering.”

One of the key characteristics that the Sentinel should have was durable, “again a typical German Swiss product design philosophy,” Stephane says. “We also needed to get the proportions spot on: The chin bar not to far out; the correct amount of Goggle space in the eye port area; the perfect peak position and collapsible features to help reduce breakage in crashes.”

Detail view of the front chin bar ventilation.

III. Weight and ventilation are top priority 

The helmet would also have to be easy of getting in and out of and hit the set 1150g weight target, as although the ‘pedal to the metal’ part of downhill biking only happens in short spurts a rider ends up wearing their helmet for hours which is a burden on neck. “The weight of the helmet is sitting on the highest point of the body and on hard breaking down steep inclines it takes very little to flip,” adds Stephane. “Every ounce saved helps keep the back wheel on the ground and so the top of priority is weight in every helmet I design.”

Ventilation was also a top priority: “For a helmet with this much coverage the air circulation – even at low speed – has to be on point, so the helmet has an elaborate channelling system with multiple ram air and exhaust vents front side back and top,” Stephane explains.

Details rear view of the Sentinel Helmet.

IV. Thinking environmental

TSG also had an environmental target to fulfil and therefore an injection shell made from ABS material was decided on, as these materials can be recycled simply by placing them in the correct bin. Also, although the topcoat of an injected shell helmet uses chemicals paints and clear coats by avoiding epoxy primers it saves on processes that are harmful to the environment.

The outer shell is made of ABS what is less harmful to the environment than fiberglass.

V. The Sentinel ticks all the boxes

Stephane describes himself as a “the helmet guy”, who at 53 years old still practices helmet design in an old school way. In his own words he takes responsibility for every stage of a helmets design, from concept and styling to production and brings in the best of the best, like in CAD, to help to make the process perfect. Stephane also believes that having a relationship with a factory is a key to the success of his methods: “The Sentinel is in the very capable hands of a small factory who do only high-end quality projects and I have my coffee mug with my name on it hanging there with the rest of the employees.”

2021 color range of the Sentinel helmet.

To wrap up Stephane says, “TSG wanted to offer a high-end downhill helmet at an affordable price and they have achieved it hands down”. Check out the Sentinel, available in satin black, satin red, satin olive, and satin grey, on the RideTSG.com and at all good bike shops. And the next time you’re pointing a bike downhill, shoot Stephane a virtual high-five for the Sentinel that’s keeping your head in one piece!

Thanks Stephane!

Shop the Sentinel now