Healthy Growth: The grow bag is designed with three vents to facilitate ventilation of the plants. Allows healthier root respiration and growth, promotes vegetable growth and yield, prevents root circulation, reduces the risk of transplant shock, and removes excess water. Clever Design: The grow bag is designed with a visual window through which you can not only check if your plants are ripe, but you can easily harvest your plants through the window without digging for clay Using the window flap, it is easy and accurate to determine whether the potato is ripe for easy harvesting without damaging the roots. Also, these grow bags have 3 drainage holes. Super Sturdy: The grow bag is made of canvas and felt material, with a double-layer design, which is not only more environmentally friendly and durable, but also easier to breathe, which is good for plant growth. And can be used repeatedly. Looking forward to your harvest this year and in the future Grow Grow Bags are made of thick, breathable non-woven fabrics that are breathable, have better drainage than traditional plastic pots, do not bind roots, but have air-trimmed roots. 3 colors: brown, green, black Available in 3 sizes: Size S: 25 x 30 cm (4 gallons) Dimensions M: 30 x 30 x 35 cm / 11.8 x 11.8 x 13.8 in (7 gal) Size L: 35 x 40 cm (10 gallons) Package Contents: 2 grow bags