Dumbbells are excellent for strength training, however they have major problems around the apartment. You need to keep purchasing brand-new ones as you get stronger. They take up too much room, and you have to hunt through them for the weight you need. They are an irritation to move. But there is a fix to these issues: the Bowflex SelectTech dumbbells.There are two kinds of Bowflex SelectTech dumbbells: The Bowflex SelectTech 552 dumbbells and the Bowflex SelectTech 1090 dumbbells. The numbers refer to the lightest and heaviest weights...