Stan's No Tubes provides me with the lightest rims available for both of my race bikes. I hammer those light rims on rocks, rally through the gravel and never flat (ok, once a year). I can't say enough good about the rims, technical support and sponsor support of Stan's No Tubes. I've met Stan, his wife Cindy and both of the Rich's that work for them. They are all top of the line folks making THE best rims and sealant on the market! They are so supportive of my racing and clinics. Now they've even posted my newsletter on their blog! Thank you for your great support!