Size : 70 x 10.5cm , 27.5" x 4.1" 
Fit for Down tube external diameter up to 16cm 
Site tube up to Φ32mm
Tires up to 700 x 25c or same width tire. 
Attachment : special non-slip Velcro strap. 
Weight : 45g with one strap / 50g with tw