The present invention discloses a product made of an oil-extended olefin block copolymer composition. The composition comprises: about 2-40 wt% of ethylene/octylene segmented copolymer; about 20-60 wt% of oil; about 5-50 wt% of one or more polyolefins; and about 10-50 wt% of filler. The ethylene/octylene segmented copolymer comprises about 5-30 wt% of rigid segments and 70-95 wt$ of soft segments. The soft segment comprises 9-14.9 mol% of units derived from octylene, and the total octylene content of the copolymer is about 6.0-14.2 mol%. The tack of the product is less than 0.1N after the composition is exposed at a temperatur of 70 DEG C after one week. A standardized oil outlet index of the product is less than 50, and a shore hardness A of the product is about in a range of from 40 to 90.