A composition comprising a blend of a pressure sensitive adhesive and an ultraviolet light-absorbing oligomer, wherein the ultraviolet light-absorbing oligomer comprises: first divalent units independently represented by formula: wherein R 1 is independently hydrogen or methyl; V is O or NH; X is a bond, alkylene, or alkyleneoxy, wherein the alkylene or alkyleneoxy have from 1 to 10 carbon atoms and are optionally interrupted by one or more -O- groups and optionally substituted by a hydroxyl group; R is alkyl having from one to four carbon atoms; n is 0 or 1; and Z is a benzoyl group optionally substituted by alkyl, halogen, or hydroxyl; a 4,6-bisphenyl[1,3,5]triazin-2-yl group wherein each phenyl is optionally independently substituted by one or more alkyl or alkoxy groups; or a 2H-benzotriazol-2-yl group optionally substituted by one or more halogens; and second divalent units represented by formula: wherein R 1 is hydrogen or methyl; and R 2 is alkyl having from 6 to 12 carbon atoms, and wherein the pressure sensitive adhesive is an acrylic pressure sensitive adhesive comprising the second divalent units, and wherein for at least some of the second divalent units in the pressure sensitive adhesive R 2 is alkyl having the same number of carbon atoms as at least some of the second divalent units in the ultraviolet light-absorbing oligomer. first divalent units independently represented by formula: wherein R 1 is independently hydrogen or methyl; V is O or NH; X is a bond, alkylene, or alkyleneoxy, wherein the alkylene or alkyleneoxy have from 1 to 10 carbon atoms and are optionally interrupted by one or more -O- groups and optionally substituted by a hydroxyl group; R is alkyl having from one to four carbon atoms; n is 0 or 1; and Z is a benzoyl group optionally substituted by alkyl, halogen, or hydroxyl; a 4,6-bisphenyl[1,3,5]triazin-2-yl group wherein each phenyl is optionally independently substituted by one or more alkyl or alkoxy groups; or a 2H-benzotriazol-2-yl group optionally substituted by one or more halogens; and R 1 is independently hydrogen or methyl; V is O or NH; X is a bond, alkylene, or alkyleneoxy, wherein the alkylene or alkyleneoxy have from 1 to 10 carbon atoms and are optionally interrupted by one or more -O- groups and optionally substituted by a hydroxyl group; R is alkyl having from one to four carbon atoms; n is 0 or 1; and Z is a benzoyl group optionally substituted by alkyl, halogen, or hydroxyl; a 4,6-bisphenyl[1,3,5]triazin-2-yl group wherein each phenyl is optionally independently substituted by one or more alkyl or alkoxy groups; or a 2H-benzotriazol-2-yl group optionally substituted by one or more halogens; and second divalent units represented by formula: wherein R 1 is hydrogen or methyl; and R 2 is alkyl having from 6 to 12 carbon atoms, and wherein the pressure sensitive adhesive is an acrylic pressure sensitive adhesive comprising the second divalent units, and wherein for at least some of the second divalent units in the pressure sensitive adhesive R 2 is alkyl having the same number of carbon atoms as at least some of the second divalent units in the ultraviolet light-absorbing oligomer. R 1 is hydrogen or methyl; and R 2 is alkyl having from 6 to 12 carbon atoms,