thndr motorcycle protector set BS365 The pressure relief valve is

The pressure relief valve is adjustable and can be adjusted with the pump in engine

However once the Mo Blaze Pin is activated

Sand 5 H2O Motorcycle Jacket

Instructions for Harley Touring Twin Cam available here

thndr motorcycle protector set BS365 The pressure relief valve isTHNDR Motorcycle Protector Set Upper Body Protector set used in THNDR Blackout hoodie. These are is soft, slim and comfortable to wear. But as soon as they get hit, they solidify and provide excellent protection. This product is delivered as a set of 5 protectors for back, shoulders and elbows. Features: Level 2 certified according to the CE EN 1621 1: 2014 standard. Thin and breathable, yet still providing excellent protection. Fits THNDR Blackout