This listing is for a qty of (1) 5 pound bag of lava sand. This sand is made from crushed red lava rock and has many uses. Its porous nature makes it an ideal addition to your planting mixes when added uo to apx 20%. Lava sand is said to have paramagnetic properties which help your plants absorb nutrients better. It works well as a decorative mulch for your indoor potted plants and adds an amazing color contrast to your bonsai trees.