Notice: Our wig caps are meticulously engineered in a standard size, featuring refined construction with four strategically placed combs—at the crown, nape, and behind each ear—for a flawlessly secure fit. Adjustable straps and bands provide a seamless, luxurious experience, accommodating a 21.5"–23.5" circumference (medium to large), ensuring comfort and elegance for the vast majority of our distinguished clientele. For women who desire a truly bespoke touch, custom sizing in both extra-small and small is available upon request. Our team is delighted to tailor every detail to your exact specifications. Please accurately measure your circumference to note your head size. Units processing time can take up to 14 days. IMPORTANT: No refunds for units after purchasing. XS: 19.5"S:20"-21"M:21.5"-22"L:22.5"-23.5"