PURPOSE: To obtain hot water-processable resin material which can be processed by softening at a relatively low temperature and is excellent in the balance between hardness and flexibility, impact resistance, resiliency, etc., by incorporating transpolyoctenamer.

CONSTITUTION: The purpose resin material for shaping is obtained by incorporating a trans-polyoctenamer. Said trans-polyoctenamer can be produced by polymerizing cyclooctene by, metathesis polymerization. It is necessary that said trans- polyoctenamer has eight carbon atoms or above, and it is desirable that it has a trans-isomer content of about 50% or above and a crystallinity of about 10% or above. Such a trans-polyoctenamer has an m.p. of about 30W60°C, and a glass transition point of about -75W-30°C and is the most suitable as a resin material for shaping. It is also possible to add other resins, rubbers, plasticizers, inorganic fillers, etc. to said resin material.