Keep mushrooms for longer. To maintain freshness, mushrooms should be stored in a breathable mushroom storage bag and refrigerated. Exposure to excess moisture will speed spoilage. Do not rinse mushrooms until ready to use. Black-out layer restricts light from passing through. Breathable material ensures air circulation and reduces moisture. 70% polyester 30% cotton, hand wash in cold water, hang to dry. Size 200 x 300mm.