Recover faster. The YY Vertical Shock One is a compact & powerful massage device designed to accompany you on all your climbing trips & training sessions. The Shock One helps reduce your recovery time & relieves soreness. It works by percussion: thanks to this movement, blood flow is caused in the direction of the massaged area, which releases muscle tension. It can even be used on ‘pumped arms’ during your climbing session, helping you climb more. The Shock One is lightweight & smartphone sized, meaning you can always fit it in your bag for your climbing trip. It comes with four massage heads to perfectly adapt to all muscle groups & can be used at four different speeds. It also comes with a storage bag & a charging cable.