Introducing our Chiller Fillers (Hat Size Reducer). A self-adhesive solution for adjusting the fit of your favorite hats and caps. Crafted from high-quality foam material, this tape is designed to provide a snug and comfortable fit by reducing the inner circumference of the headwear by up to 1cm/0.4". Its sleek black color seamlessly blends with various hat styles, ensuring a discreet appearance. This is a practical choice for hat enthusiasts. Experience the convenience of a tailored fit with our innovative Chiller Filler's!