Tough, lightweight steel U-lock with narrow dimensions provides security in high crime areas for road or mountain bikes. Narrower space within the "U" and shorter length crossbar makes it harder for thieves to get their tools inside. Patented deadbolt lock mechanism on bottom (instead of side) is easy to access but difficult to break into. Small, tubular keyway is difficult to pick. Krytonium(TM) steel provides superior strength without added weight.
Strengths: perfect size (not as big and heavy as other U-locks, but just as strong if not stronger)
Weaknesses: price - Kryptonite locks are not cheap
Bottom Line:
Excellent product, perfect size. I prefer the "mini" width, even for locking my mountain bike, because it gives potential thieves less working room. The lock is top quality and hasn't let me down yet!