●Material: 90% cotton, 3% elastic, 7% spandex ●Specifications: Stretchy, one size fits most, but may feel tight or loose. Rubber may loosen or shrink if used for a long time. Hand wash, do not wring, hang dry in shade. Avoid using fluorescent detergent and bleach. There may be some shedding after just use it, but it will be calm after a few washes ●Size (H x W): Approx. 3.1 x 3.1 inches (8 x 8 cm) ●Made in Japan