All parts are fully interchangeable and easily slide on and off a headband. They are made with synthetic leather which makes them perfect for all types of weather. They also include no adhesives so they can be left in your car (preferably out of the sunlight to prevent fading) so you’ll never forget them on park days. You may choose to purchase a headband for an additional fee of $2 but you only need 1 headband to enjoy all our options. I personally recommend checking out your big box stores for a headband that best fits you. Any 1/4-inch plastic headband with teeth will work. Check out my highlights section on Instagram for my recommendations as well as customer recommendations. Please see our other listings to purchase additional ears and centers to add on! Pattern placement may be different than pictured due to fabric cuts, color may vary slightly due to camera quality and screen resolution. Except for our patterned ears and bows, the backs of the ears are completely blank. Due to the small amount of supplies I have; I am unable to offer returns or exchanges. Please message me if you have any concerns. If you have any questions on how to install the parts, check out our highlights on our Instagram page @sewmagicmama or feel free to message me at any time! Please keep your darker colors separate from the lighter colors. There have been some instances especially due to the hotter weather of the stickier leathers transferring their colors.