Swifty Fitness Double-Ups – Grip Strength Trainer
Video by Swifty Scooters via YouTube Source In this video, Jason gets to grips with Swifty Fitness’ latest product – Double-Ups! ALL FITNESS Double-Ups are the ideal grip strength training equipment to improve your hand strength, forearm strength and overall upper body! They can either be used as pull up handles or can be connected … Read more