Boreal's Joker Lace, built with a new super-comfortable and semi-asymmetric last and slimmer fitting heel, is a popular choice for both newcomers and veterans.The low-tension integrated rand system relieves pressure on your foot, while the durable one-piece construction provides effective support that retains its shape over time.Their high quality split leather and synthetic microfibre upper has a PU Air Net lining for exceptional comfort and a fresh new look, and they also use Boreal's Cushioned Heel System (CHS) which places an EVA shock absorbing insert under the heel to cushion and protect the foot.They provide the ideal blend of edging support and long-lasting friction, all due to the medium stiffness midsole paired with the sticky and durable Zenith Quattro rubber outsole.Split leather and microfibre upperLong lace system for a great fitOne piece 3D Air Net lining for greater breathabilitySpecial anti-deformation, slip-lasted midsolePadded CHS heel for extra comfortUltra sticky BOREAL Zenith Quattro outsole (4-4.5mm thickness depending on size)Suitable for climbing courses, indoor and outdoor training, and long routes