Composite material body for impact absorption and articles comprising the body

A racket (70) comprising:

• an annular frame (80) having an inner arc portion (801) and an outer arc portion (802) connected to two ends of the inner arc portion (801) so as to define a space (81) which is arranged around a body of the annular frame (80);
• and
• two composite material bodies (10) respectively arranged at positions where the inner arc portion (801) is connected to two ends of the outer arc portion (802),
• each of the two composite material bodies (10) comprising:
• a first material layer (20);
• and
• a second material layer (30) connected to the first material layer (20);
• wherein the first material layer (20) and the second material layer (30) are connected and then wound to make the second material layer (30) be situated outside the first material layer (20) so as to form a flexible and circular rod whose diameter is between 0.3 mm and 5.0 mm,
• wherein before the first material layer (20) and the second material layer (30) are wound, the first material layer (20) is joined to an edge of the second material layer (30), and
• wherein a proportion of a whole area of the first material layer (20) to that of a sum of the first material layer (20) and the second material layer (30) is between 1:1 and 1:5.