Bowflex SelectTech 1090 Adjustable Dumbbells These adjustable dumbbells have weights that adjust from 10 to 90 lbs in 5 lb. increments. Easy-to-use selection dials for adjusting weights. Replaces up to 17 pairs of dumbbells. They are sold as a pair. Great for toning and strength training exercises for both upper and lower body including heavy leg lifts. Compatible with the free Bowflex SelectTech® training App for iOS and Android. Adjustable Dumbbell Features Replaces up to 34 Dumbbells: With just the turn of a dial, 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. Quieter Workouts: Durable molding around metal plates provides for a smooth lift-off and quieter workouts...no clanging metal plates! 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. Specifications & Dimensions of Adjustable Dumbbells Dimensions 17.5" L x 9.5" W x 10" H Assembled Weight with Base 92.3 lbs. Warranty 3 years Material Steel, Nylon, ABS, Thermoplastic Rubber