The Acavallo Arena Aluplus aluminium stirrups combines the technical features of the patented laterally opening Arena Alupro stirrups with a complete assembly in certified high-grade anodized aluminum, which in addition to giving a sleek and elegant appearance, is lightweight and extremely resistant. The upper part of the footboard is in stainless steel and is characterized by long horizontal holes that prevent the accumulation of sand and dirt, so as to guarantee an optimal grip in all conditions; stainless steel also protects it from corrosion and therefore guarantees a long product life. The opening of the stress-actuated locking and release mechanism is located a centimeter higher from the tread to ensure that the foot cannot slip out laterally by mistake and to prevent sand and dirt from delaying the opening action of the arm in case of an emergency. The footboard has an inclination of five degrees and helps the riders to assume the correct posture, relieving the tension of ankles, calves, knees and hips.