Large quantity: you will receive 40 pieces of mushroom growing bags with breathable filter, that allow plenty of room for mushroom growing and spawn, rooting and fruiting, large quantity will satisfy your farm work, provide effective production capacity and good performance Size information: the size of these mushroom spawn bags is . 15 x 50 cm/ 5.9 x 19.7 inches, and the breathable filter diameter is 5.5 cm/ 2.17 inches, these breathable bags can stand up and hold the mushroom spawn bags strongly Tear resistance: these mushroom grow bags are made of PP material, which have nice tear resistance, not break and deform easily, and they are designed to withstand high temperatures, you can use them in your farm work for a long time Multi functions: the clear bag helps to quickly spot any instances of dust, many mushroom growers use these bags to reduce the space needed to grow or spawn mushrooms when compared to trays, buckets, they will bring a convenient use experience Wide applications: spawn mushroom bags have a wide range of uses, you can apply them to your planting work and agricultural work, also you can use them in other occasions, which is need high temperature processing colour: transparent white Material: plastic Package Contents: 40 x Growing Bags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.