100% Altis MTB Helmet
- ShowProduct Information Deftly engineered for the demands of the modern-day mountain biker, the 100% Altis utilizes our prop... read more
- Show Reviews & Q&As
- Show Mountain Bike Helmet Guide
- Show Delivery & Guarantee
Deftly engineered for the demands of the modern-day mountain biker, the 100% Altis utilizes our proprietary Smartshock suspended rotational system coupled with 14 ventilation ports resulting in a safe, breathable, and budget-friendly trail helmet. Add in the adjustable visor for a cohesive storage of all 100% eyewear and goggles and you're ready to hit the trails.
- Smartshock® Rotational Protective System (11 point).
- High Density EPS foam injection molded with polycarbonate in size specific molds (XS/S, S/M and L/XL).
- Massive airflow with an impressive 14 ventilation ports.
- Expanded coverage while still lightweight.
- Multi-point adjustable visor designed for maximum vision and goggle stowage.
- Washable, moisture-wicking anti-microbial liner.
- Adjustable ratcheting fitment system.
- Nexus push release snap-buckle.
Occasionally, without notice, manufacturers change product design and/or specifications.
Mountain Bike Helmet Guide
Delivery & Guarantee
UK Delivery Information
International Deliveries – Temporarily Suspended 11/11/20
Note: We are still offering deliveries to the Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Isle of Wight, Jersey and Guernsey.
Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.
Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.
Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause.
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.