Go-kart seat, made of semi-transparent fiberglass, available in 6 sizes: 27 cm wide (weight: 0.9 Kg); 29 cm wide (weight: 1 Kg); 30 cm wide (weight: 1.15 kg), 31 cm wide (weight: 1.25 cm); 32 cm wide (weight: 1.35 Kg); 33 cm wide (weight: 1.5 Kg). Weight tolerance: 10%.