The new Wind-Blox Pro has the low-profile and patented rim-to-clip design that sets Wind-Blox Pro apart. It stops about 80% of wind noise, allows cyclists to keep the sounds they want, is very simple to attach and maintain, is technical looking, and has a reflective label for greater nighttime visiblity. The Pro works well for adjustable-clip helmets, is 10 cm long, 2 cm wide (in use) and weighs 0.4 oz.