Download this free icon pack for your Windows XP and Vista desktop. 6 icons in formats PNG (512x512, 256x256, 128x128, 48x48, 32x32, 16x16) and ICO (256x256, 128x128, 48x48, 32x32, 16x16). Based in mountain bike sport theme.
IconTexto Mountain Bike Icon Pack 1.28 MB 
Enjoy, it's free! These icons are released under CC License Attribution-Noncommercial 3.0.
