Flex between 2, 4 and 6 pounds with the Stakt Weights. These sleek adjustable weights inspire movement & help you build muscle. Patent #: D1,040,263 Versatile & Functional: Use the 2 lb base on it's own or add boost(s) to level up your workout Soft silicone texture with grooves for extra grip Perfect length to be used as a mini-bar for a variety of exercises The Stakt Weights Include: You’ll receive two hand weights that can each flex from 2 to 4 to 6 LBs.