Price: approx £449 Available from www.Amazon.co.uk
What the brand says:
"With the Bowflex® SelectTech® 1090 Dumbbells you can create the ultimate strength building workout. The additional weight of the 1090 dumbbells provides a challenging workout as you get stronger.
Just like all Bowflex® SelectTech® dumbbells, with just the turn of a dial, you can automatically change your resistance from 10 lbs (4.5 kg) all the way up to 90 lbs (40.8 kg) of weight. No more picking up 17 different sets of dumbbells to give you the results you want!
* Replaces up to 34 Dumbbells - with just the turn of a dial, you can automatically change your resistance from 10 lbs (4.5 kg) all the way up to 90 lbs (40.8 kg) of weight.
* Adjusts to Your Workout - adjust in 5 lb (2.3 kg) increments so you can gradually increase your strength.
* Space Efficient - Say goodbye to 17 sets of dumbbells cluttering your workout space.
* Wider Weight Range - with weight that adjusts up to 90 lbs., you'll continue to see results as your fitness level improves.
* Total Body Results - with the wider weight range you can do heavy exercises such as shrugs and lunges as well as lighter exercises such as curls and raises.
* Quieter Workouts - durable molding around metal plates provides for a smooth lift-off and quieter workouts...no clanging metal plates!"