• Atomic Four Jr ski helmet for kids, size S (51-55 cm) • Robust, lightweight, and urban design, ideal for young skiers • In-Mold shell with Holo Core for superior impact protection • Aircon ventilation system to keep the head cool • Custom fit with height system and rear wheel for fine adjustment • Fully removable and washable liner for better hygiene • Detachable clip to secure ski goggles • Headphone-compatible ear pads