A layered product comprising the following layer and at least one type of layer selected from the following layers and , wherein the layer is directly in contact with or adjacent via an adhesive layer to at least one layer of the at least one type of layer selected from the layers and : layer : a layer prepared by crosslinking using an ethylene/propylene/non-conjugated polyene copolymer; layer : a layer prepared by crosslinking using an acrylic-type rubber; and layer : a layer prepared by crosslinking using a halogen-containing polymer, wherein the ethylene/propylene/non-conjugated polyene copolymer satisfies the following requirements (I) to (IV): requirement (I) : a molar ratio of a structural unit derived from ethylene and a structural unit derived from a propylene (ethylene/ propylene) is from 40/60 to 99.9/0.1; requirement (II): a structural unit derived from a non-conjugated polyene accounts for 0.07% to 10% by mass with respect to 100% by mass of the ethylene/propylene/non-conjugated polyene copolymer; requirement (III): an intrinsic viscosity [η] measured in decalin at 135°C is from 1.0 to 4.0dl/g; and requirement (IV): a B value expressed by the following formula (i) for the ethylene/propylene/non-conjugated polyene copolymer is 1.20 or more. B value = EX + 2 Y / 2 × E × X + Y [where [E], [X], and [Y] represent molar fractions of ethylene, a propylene, and a non-conjugated polyene, respectively, and [EX] represents an ethylene-propylene diad chain fraction], and wherein the ethylene/propylene/non-conjugated polyene copolymer has a structural unit derived from 5 - vinyl - 2 - norbornene (VNB) . layer : a layer prepared by crosslinking using an ethylene/propylene/non-conjugated polyene copolymer; layer : a layer prepared by crosslinking using an acrylic-type rubber; and layer : a layer prepared by crosslinking using a halogen-containing polymer, wherein the ethylene/propylene/non-conjugated polyene copolymer satisfies the following requirements (I) to (IV): requirement (I) : a molar ratio of a structural unit derived from ethylene and a structural unit derived from a propylene (ethylene/ propylene) is from 40/60 to 99.9/0.1; requirement (II): a structural unit derived from a non-conjugated polyene accounts for 0.07% to 10% by mass with respect to 100% by mass of the ethylene/propylene/non-conjugated polyene copolymer; requirement (III): an intrinsic viscosity [η] measured in decalin at 135°C is from 1.0 to 4.0dl/g; and requirement (IV): a B value expressed by the following formula (i) for the ethylene/propylene/non-conjugated polyene copolymer is 1.20 or more. B value = EX + 2 Y / 2 × E × X + Y [where [E], [X], and [Y] represent molar fractions of ethylene, a propylene, and a non-conjugated polyene, respectively, and [EX] represents an ethylene-propylene diad chain fraction], and wherein the ethylene/propylene/non-conjugated polyene copolymer has a structural unit derived from 5 - vinyl - 2 - norbornene (VNB) . requirement (I) : a molar ratio of a structural unit derived from ethylene and a structural unit derived from a propylene (ethylene/ propylene) is from 40/60 to 99.9/0.1; requirement (II): a structural unit derived from a non-conjugated polyene accounts for 0.07% to 10% by mass with respect to 100% by mass of the ethylene/propylene/non-conjugated polyene copolymer; requirement (III): an intrinsic viscosity [η] measured in decalin at 135°C is from 1.0 to 4.0dl/g; and requirement (IV): a B value expressed by the following formula (i) for the ethylene/propylene/non-conjugated polyene copolymer is 1.20 or more. B value = EX + 2 Y / 2 × E × X + Y [where [E], [X], and [Y] represent molar fractions of ethylene, a propylene, and a non-conjugated polyene, respectively, and [EX] represents an ethylene-propylene diad chain fraction], and wherein the ethylene/propylene/non-conjugated polyene copolymer has a structural unit derived from 5 - vinyl - 2 - norbornene (VNB) . <EOS>