Step 1: Lay the outer bolster cover with the bottom side facing up and unzip it fully.
Step 2: Insert the bolster cushion into the outer bolster cover, ensuring that the flat, bottom side of the bolster cushion is facing up. Then, zip up the cover.
Step 3: Flip the bolster over and smooth out any wrinkles. Make sure the cover fits evenly and nicely around the bolster cushion.