To fit the cover, first attach a 4cm length of Velcro or double sided adhesive tape under the front edge of the helmet cover, either side of the skull or central spike. This is so that if you travel faster than 50mph (80kmh), the wind will not get under leading edge of cover and lift off.
Then position the cover's skull or central spike over the front centre point of your helmet at eyebrow level and firmly press on the Velcro or adhesive tape to secure. Then stretch rest of cover backwards over the helmet. Pull side areas of cover down and affix either a 2cm square of velcro or double sided adhesive tape or even some rubber/latex glue to secure those cover sides to helmet. This again stops the sides of the cover from flapping in the wind.
