The blue yoga block from Pure2Improve can be used in a variety of ways and makes certain yoga exercises easier to perform. For example, if you are not quite flexible enough to reach a certain position, put a block on the yoga mat and you can still do the exercise properly. This block is very light, you can easily take it with you to your yoga classes. Specifications: Color: blue Material: EVA (Ethylene vinyl acetate) Dimensions: 22.86 x 15.24 x 7.6 cm (L x W x H) Label: strength, stability