Coconut Coir is an organic tiny particle which is obtained from coconut husk while separating fibre from husk. The Coir is also known as Cocopeat. These are 5 bricks of compacted Coconut Coir or Cocopeat. Each brick weighs around 650gr. Used in Horticulture and Floriculture Environments. Coco peat provides with an organic alternative to rock wool and perlite media without the environmental disposal issues. Hydroponic crop production using Coco peat makes the opportunity to consistently maximize yield and provide better quality. High water and nutrition holding capacity. IMPORTANT NOTE: You receive a minimum of 7.2 pounds of bricks. Brick sizes will vary, but you will receive the minimum weight. Sold by weight, not by volume.