Our Stock Size is Medium which is 22.5 inches, and we have the combs and elestic band or adjustable straps inside. We got your request for your order , You would like to use the Small/Large Cap for your wig, Is that right ? Kindly Reminder: For full lace wig and front lace wig: 1.Our full lace wigs and front lace wigs could not be chaged the size. For 360 wig/Bob wig/customized wig 1. Small Size is 21.5 inch, Large Size is 23.5 inch, you should know your own size and make a suitable decision. 2. If you change to those special size, you may need wait another extra 15-20 days, if you can wait ? 3. It will be charge extra 50$ for making the special size for you. For U-part wig: 1 Our U-part wigs could not be changed the cap size, but the top is empty you can adjust the wig according to your head size. Could you accept the above tips for your order ? If you want to ask for small/big cap. Please remember to take a note on the cart or send us the Email.