Alpinestars Bionic Action Youth Chest Protector 4S1 Track System All‑new closable venting system: chin

All‑new closable venting system: chin bar and brow vents with hidden slider control plus rear exhaust

Long-Life Tread Compound: Extended wear resistance for high-mileage riding

This knee brace features a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction

The secure MXM (or SX2) auto‑lock magnetic closure buckle and side adjusters keep the pants locked in place

Alpinestars Bionic Action Youth Chest Protector 4S1 Track System All‑new closable venting system: chinAn ultra lightweight protective system offering excellent upper body protection, this protector features an all new chest protector complete with Cell Technology for ultra light weight and optimum ventilation. The back protector is also new and boasts a softer formulation for an enhanced adaptive fit. Both the front and rear hard shell plates are backed with a bio foam padding for a secure and comfortable snug fit. Quick and extremely easy to put on,