5 mm chain

A nice light helmet from Abus with practical adjustment

It can be used with both Kryptonite U-locks and locks from other brands

The lock comes with three stainless steel keys

Abus Smiley 3.0 Børnehjelm - Green Robo Size:Small /45-50cm 5 mm chainReliable, comfortable, and snug children's helmet with soft pads and straps, and easy screw adjustment. Fits very well on small children and is perfect as a first bicycle helmet. The Abus Smiley fits snugly at the back of the neck and embraces the head well, making it perfect for cycling and rollerblading. The adjustment system at the back of the neck has a practical dial that ensures individual wearing comfort, as the helmet can be adjusted to the