"OrganicDews" Premium Coco Coir Pith Bricks 1.4 Lbs(650gms)each - 4 Pack - Made From 100% Natural Coconut Fibre or Coir Which Is Excellent Growing Medium for Plants and Earthworms - Expands Upto 2 to 2.3 Gallons(8 - 9 Liters) Per Brick After Adding Water - Perfect for Seed Starter - Best Replacement for Peat Moss and Peat Soil - Guarantee Your Plants Grow Happier and Healthier. Perfect multipurpose growing media for horticulture, floriculture, worm bedding. High water holding/retention capacity. Has high air filled porosity and very good soil conditioner. Stores and releases nutrients over extended periods of time. Size of Brick : 20X10X4.5 cm & Weighs 650gms each