EVA yoga blocks Our High Density Eva foam blocks are made from sturdy,Website:http://www ... resistant EVA foam, which is Eco-Safe. These blocks are very strong, durable, and yet incredibly lightweight ... for added comfort.Usage:1.Foam blocks lend support and extension to yoga postures2.These bricks are a ... and poses. They can be used in all yoga levels. Helps increase flexibility level, deepen stretches, ...