I wish I found this product earlier. It works great for hay for my mini REX. There is velcro closure at the top so the hay stays contained in the bag. When the velcro top isn't closed my bunny will pull the hay from the top also. Obviously hay may end up getting in the velcro which might make it more difficult to use for closing. There is a hanging strap but I removed it and am just using the 2 hooks that easily snap on the cage. I also used a clip to secure the loop in the back to keep it in place if the bunny tries to pull on it. It's easy for the bunny to pull the hay and eat from the 2 holes in the front. Am purchasing 2 more to donate to a rescue. My bunny does not waste as much hay as previously. This is definitely less messy and cost effective!