Rollerblade Micro 4X Combo junior,
    This soft and supportive extendible skates with a lace closure
    system specially designed to grow with children’s feet so new skates
    are not needed as often. This Combo pack comes with a bonus set of
    Rollerblade Protective and a set of cones to improve the skating
    options. They are extendible in length up to size US7.

Features include:
LINER: Specially padded liner designed to adapt to the shape of a child’s foot featuring elastic material in the toe area in order to accommodate growing feet.

Protective triple pack included in Combo pack.

WHEELS:
4 wheels 72 mm/80A sizes 22.5–25.5, (US4 - US7)
4 wheels 72 mm/80A sizes 20.5–23.5, (US2 - US5)
3 wheels 72 mm/80A sizes 18.5–21.5  (US12 - US2)

BEARINGS: Abec 3