These jars WILL NOT break in transit because they are made from tempered, High-Density Poly-Ethylene, NOT GLASS.
Jars contain a volume of four ounces, which provides for the FASTEST colonization available in any known substrate container available today. Mycelium-Jars also ship PRE-STERILIZED and are ready for your inoculation. Each Mycelium-Jar comes fortified with added minerals and PEANUT-MEAL NUTRIENT for larger, faster-growing, and healthier mushrooms.
The Mushroom-Mycelium Jars are designed for growing your favorite edible grain loving mushrooms.
CAUTION: These jars are capable of growing Psilocybe Cubensis mushrooms species and it is not advised by SporeStore.com for anybody to do so unless legally licensed by their local agricultural or research authorities.