Key features:

• Sizes: XS (48-51cm), S (52-54cm), M (54-57cm)
• Material: PVC
• Technology: Mold-In

Additional informations:

• Ventilation system – 6 holes
• Mold-In – the inner part of the shell made of a thin layer of polystyrene beads strongly bonded together to increase the ability to absorb strong impacts.
• Adjustment knob