Discover Headlokt’s award-winning innovation! Headlokt is the first helmet that’s also a lock. A fully featured cycling helmet with an integrated retractable cable lock by Sinox, one of the world’s largest lock manufacturers. Headlokt Black features a Matt Black shell with signature Aqua detailing on the tightening dial and the internal helmet padding. Headlokt’s urban-style and functionality keeps heads protected during use and bikes or gear secure at the end of trip. Features First class design and utility for everyday riding so it looks good and is practical. A hard-wearing cable and combination lock allow you to secure both your bike and helmet. Keeping the important stuff secure at all times. Fully integrated lightweight lock unit seamlessly fitting the shape of the helmet. Rear dial for precise fit to individual head sizing. 10 vents to channel air through the helmet. Reflective 3M decals on the rear of the helmet, providing greater visibility and safety, without the need for electronics or batteries. Headlokt’s Integrated Bluetooth Tracker Holder Headlokt introduces an innovative feature with a fully integrated holder for a Bluetooth tracker (tracker not included), revolutionizing the cycling experience. This thoughtful addition allows users to effortlessly attach their preferred Bluetooth tracking device to the helmet, providing an extra layer of security and peace of mind. Sizes Small 53-55cm 530g Medium 55-58cm 560g Large 59-61cm 600g Safety Certifications AS/NZS 100% Recycled cardboard & 100% recyclable packaging Our packaging is crafted entirely from 100% recycled cardboard, ensuring minimal environmental impact and promoting sustainability. Furthermore, our packaging materials are 100% recyclable, allowing them to be reused or repurposed after they have served their initial purpose.