Check the listing for details. Set Paratendons and Fetlock Boots Acavallo Opera Gel Lined Tendon. Color: Nero - Black, Condition: New. Listed at 358.38 USD. GThanks to the special elastic rubber, these le OPERA FRONT B. RUBBER and STUD FAST BOOTS. GEL LINED they adapt to any size. The material also makes the boots suitable for a wide range of animals. At the same time, the material of the straps, together with the integrated holes, are specially designed to avoid blood flow restrictions and chafing, thus providing maximum comfort to the horse. The ACAVALLO OPERA boots have a gel lining and snap buttons. They are a perfect combination of innovation, functionality, creativity and Italian design. Furthermore, the internal part of the boots is completely made of soft neoprene with gel lining, for incredible comfort and with a protective effect on the tendons. The ventilation system ensures air circulation to help paws from overheating. Finally, th.