A copolyester composition comprising: (a) from about 50 to about 95 weight % of a copolyester, the copolyester comprising: (i) a diacid component comprising from 70 to 100 mole % residues of terephthalic acid, from 0 to 30 mole % residues of a modifying aromatic diacid having from 8 to 12 carbon atoms, and from 0 to 10 mole % residues of an aliphatic dicarboxylic acid; and (ii) a glycol component comprising from 45 to 95 mole % cyclohexanedimethanol (CHDM) residues, from 5 to 65 mole % 2,2,4,4-tetramethylcyclobutane-1,3-diol (TMCD) residues, and from 0 to 10 mole% of a modifying glycol having 2 to 20 carbon atoms; wherein the inherent viscosity of the copolyester is from 0.5 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C, and wherein the weight % is based on the weight of the copolyester, wherein the total mole % of the dicarboxylic acid component is 100 mole % and the total mole % of the glycol component is 100 mole %; and (b) from about 5 to about 30 weight % of a flame retardant additive comprising a halogen-containing compound, wherein the flame retardant additive has a melting temperature (Tm) or a glass transition temperature (Tg) of 270°C or less, measured as indicated in the specification; wherein the copolyester composition has a UL 94 V-0 rating or better; and wherein the copolyester composition has a notched Izod impact strength of 125 Joules/m or greater measured according to ASTM D256. (a) from about 50 to about 95 weight % of a copolyester, the copolyester comprising: (i) a diacid component comprising from 70 to 100 mole % residues of terephthalic acid, from 0 to 30 mole % residues of a modifying aromatic diacid having from 8 to 12 carbon atoms, and from 0 to 10 mole % residues of an aliphatic dicarboxylic acid; and (ii) a glycol component comprising from 45 to 95 mole % cyclohexanedimethanol (CHDM) residues, from 5 to 65 mole % 2,2,4,4-tetramethylcyclobutane-1,3-diol (TMCD) residues, and from 0 to 10 mole% of a modifying glycol having 2 to 20 carbon atoms; wherein the inherent viscosity of the copolyester is from 0.5 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C, and wherein the weight % is based on the weight of the copolyester, wherein the total mole % of the dicarboxylic acid component is 100 mole % and the total mole % of the glycol component is 100 mole %; and (i) a diacid component comprising from 70 to 100 mole % residues of terephthalic acid, from 0 to 30 mole % residues of a modifying aromatic diacid having from 8 to 12 carbon atoms, and from 0 to 10 mole % residues of an aliphatic dicarboxylic acid; and from 70 to 100 mole % residues of terephthalic acid, from 0 to 30 mole % residues of a modifying aromatic diacid having from 8 to 12 carbon atoms, and from 0 to 10 mole % residues of an aliphatic dicarboxylic acid; and (ii) a glycol component comprising from 45 to 95 mole % cyclohexanedimethanol (CHDM) residues, from 5 to 65 mole % 2,2,4,4-tetramethylcyclobutane-1,3-diol (TMCD) residues, and from 0 to 10 mole% of a modifying glycol having 2 to 20 carbon atoms; from 45 to 95 mole % cyclohexanedimethanol (CHDM) residues, from 5 to 65 mole % 2,2,4,4-tetramethylcyclobutane-1,3-diol (TMCD) residues, and from 0 to 10 mole% of a modifying glycol having 2 to 20 carbon atoms; wherein the inherent viscosity of the copolyester is from 0.5 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C, and wherein the weight % is based on the weight of the copolyester, wherein the total mole % of the dicarboxylic acid component is 100 mole % and the total mole % of the glycol component is 100 mole %; and (b) from about 5 to about 30 weight % of a flame retardant additive comprising a halogen-containing compound, wherein the flame retardant additive has a melting temperature (Tm) or a glass transition temperature (Tg) of 270°C or less, measured as indicated in the specification; wherein the copolyester composition has a UL 94 V-0 rating or better; and wherein the copolyester composition has a notched Izod impact strength of 125 Joules/m or greater measured according to ASTM D256. wherein the flame retardant additive has a melting temperature (Tm) or a glass transition temperature (Tg) of 270°C or less, measured as indicated in the specification; wherein the copolyester composition has a UL 94 V-0 rating or better; and wherein the copolyester composition has a notched Izod impact strength of 125 Joules/m or greater measured according to ASTM D256.