The price is based on the M size. Large capacity design for organizing a large amount of kitchen waste and garden waste , fast fermentation, good quality, suitable for organic food waste leaf vegetable peels and food, weeds, leaves, vegetable leaves and other materials to be fermented into compost for later use. Use for collecting weeds, grass clippings, other types of yard waste. Also be used as storage bag storing children’s toys, clothes, garage tools, moving, camping and pack the tools. Size: (Medium 15 Gallon: 35 cm * 60 cm/ 13.78 inch *23.62 inch,; Large 34 Gallon: 45 cm * 80 cm/ 17.72 inch *31.5 inch.)