Optima Croxer Rollers with adjustable size, ideal for the growth of your child's feet. They can be adjusted to 4 full sizes with the simple press of a button.

• Adjustable size:
• Size (in centimeters): 31-34 (18.5-20.5cm)
• 35-38 (21-23cm)
• 39-42 (24-26.5cm)
• Bearings: ABEC-7
• Wheel Diameter: 64mm (size 31-34)
• 70mm (size 35-38)
• 72mm (size 39-42)

The rollers are fast, comfortable, lightweight, and durable, with professional bearings and a shell made of semi-soft, lightweight, and durable polycarbonate material, as well as internally featuring 2 layers of foam for maximum comfort.