#PhysBox Family Fitness Centre, Unit 2, Woodside Park, Station Road, Tetney, Grimsby, DN36 5HX. Privacy statement, shipping and returns Policy.patent pending and complies with British/European Standard BS EN 957-1:2005. Warning; injuries to health may result from incorrect or excessive training. Maximum user weight 120kg. Lifetime Guarantee applies only to UniKurve framework (please see instruction manual on maintenance and care of your UniKurve). Guarantee does not apply to the coloured finish.