| 摘要 |
A racket includes a head 8, a first foam 6a and a second foam 6b. The head 8 is formed from a fiber reinforced resin. The head 8 has an inside part 16, an outside part 18 and two middle parts 20. The foams 6 are joined to respective inner surfaces of the middle parts 20. Each foam 6 includes a matrix and a large number of bubbles dispersed in the matrix. In a cross section of the head 8, a ratio of an area of the foam 6 to an area of a space is equal to or greater than 5% and equal to or less than 50%. The foam 6 has a density of equal to or less than 0.30 g/cm3. The foam 6 has a 25% CLD measured in accordance with “JIS K6254” standard of equal to or less than 0.10 MPa. |
