The Surge challenges the body like no other product by engaging the user to emphasise greater dynamic effort to manipulate the perpetually shifting water load while also continuously forcing the body to react and adjust to accommodate for the constantly shifting water mass inside. The Surge will improve your health, fitness and performance by improving: balance, stability and co-ordination; fundamental muscular movement and neuromuscular capabilities; greater body awareness, postural control and movement efficiency; muscular performance for muscular stabilisation of main muscles, stronger overall movements and reduced injury risk. Total weight 5kg. Size H110, W22, D22cm.