YES... Size Matters!
Tube Size
CHECK EMBLEM FIT BEFORE ORDERING
Raven's NFC Emblem case is Polycarbonate, an impossibly strong, inflexible plastic molded to securely fit 1" to 1 1/4" standardized bike seat tubes using an epoxy glue packet containing only enough volume to fill all small gaps.
Wrap Frame Mark Guide Measure Guide
WRAP MARK MEASURE
   
1 Wrap slip of paper around bike seat tube or down tube.
2 Offset paper slightly to mark at point of overlap.
3 Measure disance to mark. EMBLEM FITS if 4" or LESS.