Fast Adjust from 2 to 5 Pounds: Each Dumbbell Can Adjust: 2 3 4 5 lbs, One Pair Can Adjust: 4 6 8 10 lbs TPU Soft Rubber Handles: The handles are made of TPU soft rubber, ensuring a secure grip even during sweaty workouts. This non-slip, sweat-resistant design enhances your overall exercise experiences. To make more durable, the shell of these adjustable weights is made of tough ABS materials