Get the best workout of your life with Bowflex SelectTech 1090I Adjustable Dumbbells. With a weight range of 10 to 90 pounds, these dumbbells will let you quickly and easily adjust the weight of your workout so you can get the best results possible. The Bowflex SelectTech 1090I adjustable dumbbells are perfect for anyone who is looking to get in shape or wants to take their fitness routine to the next level. These dumbbells are perfect for a variety of sports and activities, including weight lifting, bodybuilding, and fitness.