The Adjustable Dumbbells 5in1 Dumbbell Set is a versatile and convenient weight lifting tool that offers four different weight options: 20, 30, 40, and 90 lbs. Made of durable materials like ABS, foam, and PVC, these adjustable dumbbells are designed for hands, waist, and back training. The compact dimensions of 22.0 cm in height, 60.0 cm in length, and 28.0 cm in width make them easy to handle and store. With a total weight of 32.06 kg, this set is perfect for weight lifting enthusiasts looking to customize their workout routine.