Molded foam

A molded foam tube comprising:

• a tube body, and
• a flange joined to an outer side of the tube body, wherein
• the tube body and the flange are formed from a foamed material;
• the flange has a first end and a second end;
• the entire flange has a constant thickness from the first end to the second end, without a recessed groove on the flange;
• the first end is joined to and integral with the tube body, and the second end is not joined to the tube body;
• an expansion ratio of the foamed material is from 1.5 to 1.8;
• and
• the flange has a thickness B, the tube body at a point peripheral to where the flange is joined has a thickness A, and a value of B:A is greater than 1.40 and less than 1.97, wherein one of the following conditions is met:
• (i) the thickness A is 1.53 mm or more and 2.13 mm or less, and the thickness B is 3.01 mm or more and 3.05 mm or less;
• (ii) the thickness A is 2.26 mm or more and 2.81 mm or less, and the thickness B is 4.36 mm or more and 4.43 mm or less.