Buckle for fastening a sports boot and a sports boot having such buckle

A sports boot comprising:

• a pair of flaps;
• a buckle for fastening the sports boot by bringing the two flaps closer together, said buckle comprising:
• a baseplate;
• a lever connected to the baseplate by a first transverse articulation about an articulation axis, the lever having a gripping portion opposite the articulation to the baseplate;
• a connection rod articulated at a first end to the lever by a second transverse articulation about a second articulation axis located between the first articulation and the gripping portion;
• a buckle mounted to a second end of the connection rod;
• the lever comprising a lever body having a guiding tube for housing a respective pin extending along each of the articulation axes;
• the lever body being formed of a sheet of material, said sheet of material being folded along folding lines that are parallel to each of the articulation axes to form the guiding tubes for guiding said pins extending along the articulation axes.