Addition-crosslinkable silicone elastomer composition comprising 1-10 % by weight of at least one linear organopolysiloxane containing at least 2 SiC-bonded radicals having aliphatic carbon-carbon multiple bonds, wherein the mean molar mass of is not more than 15,000 g/mol, 1-20 % by weight of at least one linear organopolysiloxane containing at least 2 SiC-bonded radicals having aliphatic carbon-carbon multiple bonds, wherein the mean molar mass of is at least 40,000 g/mol, 1-40 % by weight of at least one organopolysiloxane containing at least three Si-bonded hydrogen atoms per molecule, having a content of Si-bonded hydrogen of from 0.04 to 1.7 % by weight and a mean molar mass of not more than 20,000 g/mol, 1 - 100 ppm (based on the metal) of a hydrosilylation catalyst, 50-99 % by weight of at least one branched silicone resin of the general empirical formula (R 3 3 SiO 1/2) l (R 4 R 3 2 SiO 1/2) t (R 4 R 3 SiO) u (R 3 2 SiO) p (R 4 SiO 3/2) q -(R 3 SiO 3/2) r (SiO 4/2) s, wherein R 3 denotes a linear aliphatic radical, R 4 denotes an aliphatically unsaturated radical having a terminal C=C double bond, l, t, u, p, q, r and s denote integers, wherein the following apply: 1≥0, t≥0, u≥0, p≥0, q≥0, r≥0 and s≥0; and the content of aliphatically unsaturated groups in is between 0.2 and 10 mmol/g; and has a mean molar mass of not more than 10 5 g/mol, with the proviso that the ratio of the Si-H groups provided by component to the aliphatically unsaturated groups provided by components, and is between 0.5 and 5 and the ratio of the dynamic viscosity of the silicone elastomer composition at shear rates of 1 s -1 and 100 s -1 and a temperature of 20°C is not more than 1.2 and after crosslinking has a Shore D hardness of at least 25. 1-10 % by weight of at least one linear organopolysiloxane containing at least 2 SiC-bonded radicals having aliphatic carbon-carbon multiple bonds, wherein the mean molar mass of is not more than 15,000 g/mol, 1-20 % by weight of at least one linear organopolysiloxane containing at least 2 SiC-bonded radicals having aliphatic carbon-carbon multiple bonds, wherein the mean molar mass of is at least 40,000 g/mol, 1-40 % by weight of at least one organopolysiloxane containing at least three Si-bonded hydrogen atoms per molecule, having a content of Si-bonded hydrogen of from 0.04 to 1.7 % by weight and a mean molar mass of not more than 20,000 g/mol, 1 - 100 ppm (based on the metal) of a hydrosilylation catalyst, 50-99 % by weight of at least one branched silicone resin of the general empirical formula (R 3 3 SiO 1/2) l (R 4 R 3 2 SiO 1/2) t (R 4 R 3 SiO) u (R 3 2 SiO) p (R 4 SiO 3/2) q -(R 3 SiO 3/2) r (SiO 4/2) s, wherein R 3 denotes a linear aliphatic radical, R 4 denotes an aliphatically unsaturated radical having a terminal C=C double bond, l, t, u, p, q, r and s denote integers, wherein the following apply: 1≥0, t≥0, u≥0, p≥0, q≥0, r≥0 and s≥0; and the content of aliphatically unsaturated groups in is between 0.2 and 10 mmol/g; and R 3 denotes a linear aliphatic radical, R 4 denotes an aliphatically unsaturated radical having a terminal C=C double bond, l, t, u, p, q, r and s denote integers, 1≥0, t≥0, u≥0, p≥0, q≥0, r≥0 and s≥0; and the content of aliphatically unsaturated groups in is between 0.2 and 10 mmol/g; and has a mean molar mass of not more than 10 5 g/mol,