Dosho Design DBL009 Dosho Dumbbells, Pair (5-45 pounds) Clam-Shell System makes adjusting the amount of weight simple as a flick of a finger Solid weight plates adjust from 5 lbs. to 45 lbs. -- the equivalency to nine dumbbells in one High-grade rubber hand grips provide a non-slip, controlled grip Includes a durable storage case for easy storage Manufacturer Lifetime Warranty