Medium - 33-39cm (Measuring round bicep)
Large - 37-42cm (Measuring round bicep)
X-Large 40-48cm (Measuring round bicep)
The Strength Shop Thor Ballista (Black) is an aid to bench pressing, helping to keep the elbows tucked, and the lats tight. Creates a line similar to that which would be followed in a bench shirt, and gives 'spring' off the chest to aid the press, and also overload the triceps and the lockout part of the movement.
Features 1-piece construction. There is no divide in the middle of the Ballista making it stronger and more durable than ever.
These are made from the Thor material, which is very stiff, and gives a good amount of 're-bound' off the chest. They come with a 1-year warranty against splitting/defective workmanship (see T&C's for full details).
Video showing Del McQueen using the Thor Ballista (yellow/black in video)