DURABLE CONSTRUCTION: These 5 lb dumbbells feature a steel core with a vinyl exterior, providing lasting durability for your exercise and strength training needs ANTI-ROLL DESIGN: These hex dumbbells with hexagon shaped ends prevent the weights from rolling away, offering convenient stay-in-place storage for ease of use during workouts SECURE NON-SLIP GRIP: These exercise & fitness dumbbells have a non-slip grip and contoured handle, providing a secure hold VERSATILE SIZE OPTIONS: Available in multiple sizes, these dumbbell weights allow you to mix and match according to specific workout needs and to expand your collection over time VINYL EXTERIOR: The vibrant coating not only looks great but also protects your floors and equipment