Choosing your Silly Helmet Cover
Three Quarter Jet Style Helmets
Motorcycle Helmet Covers
If you wear one of these Three Quarter Jet style open face helmets, you need to order a MK1 Piston, Mk2 Horny or a MK2 Spikey cover designed for helmets with an external circumference of 87cm to 92cm ( 34 inches to 36 inches)
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The Mk2 Horny MK2 Spikey MK1 Piston Circumference check
Beany/Novelty Helmets
Ski and Snowboard Helmet Covers, Hockey Helmet Covers,
Climbing Helmet Covers, Riding Helmet Covers etc
If you wear one of these motorcycle Beanie / Novelty, Construction or Adventure Sport style helmets, you need to order a Mk4 Horny cover, designed for helmets with an external circumference of 69cm to 71cm (27 inches to 28 inches)
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The MK4 Horny Circumference check
Fitting your Silly Helmet Cover
To fit the cover, first attach a 2cm ( 1 inch ) square of Velcro or double-sided adhesive tape under the front edge of the helmet cover, either side of the skull or central spike / sparkplug. This is so that if you travel faster than 50mph (80kmh), the wind will not get under leading edge of cover and blow it off. ( you'll then have to reverse and go find it!! )
Then position the cover's skull or central spike / sparkplug over the front centre point of your helmet at eyebrow level and firmly press on the Velcro or double-sided adhesive tape to secure. Then stretch rest of cover backwards over the helmet. Pull side areas of cover down and affix either a 2cm ( 1 inch ) square of Velcro or double sided adhesive tape or even some rubber/latex glue to secure those cover sides to the helmet. This again stops the sides of the cover from flapping in the wind.