The PowerBlock Pro Series EXP Stage 1-3 Adjustable Dumbbells (5 to 90 lb) allow for a total-body workout without the need for multiple pairs of dumbbells. Their quick-release Auto-Lock system and open design improve ergonomics, safety, and range of motion. Color-coded bands and an integrated weight chart allow for precise weight selection. A practical, stylish, and efficient solution for home or professional workouts.