There are 60CM, 90CM, 150CM and 180CM Long and you can use them in different ocassions. DW][No Sand Required] Flood-proof Sandbags Wate absorber Swelling Bags... Antrella Water Activated Sandbag for Flood Control Water Absorbent Flood Barrier for Door Garage Garden Quick Dam QD65-4 Water Activated 5ft Flood Barrier, 4 Pack, Black Self-expanding Flood Barrier 20x60cm Reflective Strip Sandless Flood Control Bag Water Activated Absorbent Flood Barrier For Home Garage Rain Protection I.1489859013 Self-expanding Flood Bags MANY CHOICES: Compared with others,we have many different sizes of water activated bags wait you to choose. PACKAGE INCLUDES:20x60CM water activated bags upgraded (with reflective strip) x 2PCS; SELF EXPANDING WIDELY USE:Suitable for home doors and windows, garden gate, garage entrance, basement, this absorbent bag is a good flood barrier for home. GOOD QUALITY: The Water barrier bag is made of non woven fabric and absorbent resin material.