A polyamide composition comprising: (a) at least one polyamide mixture formed from (i) a polyamide 6,6, of which the amount of amine end group is greater than the amount of carboxylic acid end group; and (ii) a blend of a first high chain-length polyamide having viscosity number of X 1 and a second high chain-length polyamide having VN of X 2, the first and the second high chain-length polyamide comprising at least 50% moles of recurring units R PAL selected from the group consisting of recurring units (i)-(xi): (i) -NH-(CH 2) 8 -CO- (ii) -NH-(CH 2) 9 -CO- (iii) -NH-(CH 2) 10 -CO- (iv) -NH-(CH 2) 11 -CO- (v) -NH-(CH 2) 6 -NH-CO-(CH 2) 8 -CO- (vi) -NH-(CH 2) 6 -NH-CO-(CH 2) 10 -CO- (vii) -NH-(CH 2) 10 -NH-CO-(CH 2) 10 -CO- (viii) -NH-(CH 2) 6 -NH-CO-(CH 2) 7 -CO- (ix) -NH-(CH 2) 12 -NH-CO-(CH 2) 10 -CO- (x) -NH-(CH 2) 10 -NH-CO-(CH 2) 8 -CO- (xi)-NH-(CH 2) 6 -NH-CO-(CH 2) 16 -CO-; (b) at least one reinforcing filler; (c) at least one heat stabilizer; and (d) at least one ionic lubricant, wherein X 1 is greater than X 2, and VN is measured in accordance with the standard ISO 307 in a 0.005 g/mL strength solution of polyamide at 25 °C. (a) at least one polyamide mixture formed from (i) a polyamide 6,6, of which the amount of amine end group is greater than the amount of carboxylic acid end group; and (ii) a blend of a first high chain-length polyamide having viscosity number of X 1 and a second high chain-length polyamide having VN of X 2, the first and the second high chain-length polyamide comprising at least 50% moles of recurring units R PAL selected from the group consisting of recurring units (i)-(xi): (i) -NH-(CH 2) 8 -CO- (ii) -NH-(CH 2) 9 -CO- (iii) -NH-(CH 2) 10 -CO- (iv) -NH-(CH 2) 11 -CO- (v) -NH-(CH 2) 6 -NH-CO-(CH 2) 8 -CO- (vi) -NH-(CH 2) 6 -NH-CO-(CH 2) 10 -CO- (vii) -NH-(CH 2) 10 -NH-CO-(CH 2) 10 -CO- (viii) -NH-(CH 2) 6 -NH-CO-(CH 2) 7 -CO- (ix) -NH-(CH 2) 12 -NH-CO-(CH 2) 10 -CO- (x) -NH-(CH 2) 10 -NH-CO-(CH 2) 8 -CO- (xi)-NH-(CH 2) 6 -NH-CO-(CH 2) 16 -CO-; (i) a polyamide 6,6, of which the amount of amine end group is greater than the amount of carboxylic acid end group; and (ii) a blend of a first high chain-length polyamide having viscosity number of X 1 and a second high chain-length polyamide having VN of X 2, the first and the second high chain-length polyamide comprising at least 50% moles of recurring units R PAL selected from the group consisting of recurring units (i)-(xi): (i) -NH-(CH 2) 8 -CO- (ii) -NH-(CH 2) 9 -CO- (iii) -NH-(CH 2) 10 -CO- (iv) -NH-(CH 2) 11 -CO- (v) -NH-(CH 2) 6 -NH-CO-(CH 2) 8 -CO- (vi) -NH-(CH 2) 6 -NH-CO-(CH 2) 10 -CO- (vii) -NH-(CH 2) 10 -NH-CO-(CH 2) 10 -CO- (viii) -NH-(CH 2) 6 -NH-CO-(CH 2) 7 -CO- (ix) -NH-(CH 2) 12 -NH-CO-(CH 2) 10 -CO- (x) -NH-(CH 2) 10 -NH-CO-(CH 2) 8 -CO- (xi)-NH-(CH 2) 6 -NH-CO-(CH 2) 16 -CO-; (i) -NH-(CH 2) 8 -CO- (ii) -NH-(CH 2) 9 -CO- (iii) -NH-(CH 2) 10 -CO- (iv) -NH-(CH 2) 11 -CO- (v) -NH-(CH 2) 6 -NH-CO-(CH 2) 8 -CO- (vi) -NH-(CH 2) 6 -NH-CO-(CH 2) 10 -CO- (vii) -NH-(CH 2) 10 -NH-CO-(CH 2) 10 -CO- (viii) -NH-(CH 2) 6 -NH-CO-(CH 2) 7 -CO- (ix) -NH-(CH 2) 12 -NH-CO-(CH 2) 10 -CO- (x) -NH-(CH 2) 10 -NH-CO-(CH 2) 8 -CO- (xi)-NH-(CH 2) 6 -NH-CO-(CH 2) 16 -CO-; (b) at least one reinforcing filler; (c) at least one heat stabilizer; and (d) at least one ionic lubricant,