Our Surya cork block is made of high quality sustainable cork which will support you in every asana. It will help you feel stable and strengthen every asana of yours. It is easy to grip and comfortable. Cork blocks are used as a prop in yoga asana practice. The purpose of a yoga block is to help stabilize poses and make them more accessible to yogis of different abilities and body types. In addition, yoga blocks can be used to deepen a pose or stretch. Soul of the Cork Block: Sustainable fine grain cork. Easy to grip. Comfortable contoured edges. Size: 4" x 9" x 6". Color: Natural Cork. Material: 100% Sustainable Cork. Care instructions: Wipe clean with a damp cloth. If needed, use an organic cleaning solution with no harsh chemicals.