However, if you think you'll want to wash your casing at some point, or you don't have much room to store it, you can sew velcro strips into the tube's interior. Each strip should cover half of the tube's interior so that, when you stick them together, they seal it completely to prevent filling from leaking out. Although these strips often come with sticky backing, we recommend reinforcing the adhesive by adding a row or two of stitches down the length of each velcro rectangle. If you're using heavy rice as your filler, remember to hold the open end upright or keep it pinched shut when you move the blocker from place to place. When the weather warms up, you can rip open your tube, pour out the stuffing, and wash the casing before folding it up with your winter clothes, awaiting the next cold season.