Listing is for a full, one ziplock bag (9x12).

Made from 100% natural clay
4mm - 16mm clay pebbles
Suitable for flood and drain systems, multi-pot, and drip feed systems. Great for soil aeration and drainage.
High total porosity (approximately 85% by volume) provides excellent root ventilation and oxygenation to plants.

LECA - Lightweight Expanded Clay Aggregates