Good to know
- The Boreal Diabolo is a slip-lasted climbing shoe crafted for senders who need bolstered precision in their step. It has been redesigned with a new low-profile last, giving it a precise toe zone and a close-fitting heel cup.
- This remodeled version now comes with a long-wearing outsole, called Zenith Pro. It replaces the FS-Quattro sole technology of the original build.
Downturn. The Diabolo from Boreal is a moderately downturned climbing shoe. Its toe profile gives it a kind of camber that offers versatility on a variety of routes. It allows climbers to take on multi-pitch projects using different climbing techniques.
Applications. This all-rounder is engineered for sport climbing and bouldering. It is equipped for vertical faces and slabs. Beginners and intermediate climbers may use it both indoors and outdoors.
A low-cut, asymmetric rock climbing shoe for men is the Boreal Diabolo. The last on which it was engineered gives it a low-volume toe region and an adequately snug heel. Owners can customize its fit for a secure lockdown using the shoe’s Velcro strapping system.
Midsole. The Boreal Diabolo climbing shoe uses a sufficiently stiff midsole for underfoot support. It is imbued with an anti-deformation technology, allowing it to flex and contort without bending out of shape.
Outsole. In the Diabolo, wearers can ascend walls and rocky routes with enough surface traction thanks to the Boreal-exclusive Zenith Pro outsole. Its rubberized construction comes at a thickness of 4.5 mm. It is made of a special type of compound that produces and maintains traction on small footholds, especially on micro-edges. Its ridged lower half extends to the upper’s heel zone for extra slip resistance on rough surfaces.
A combination of split leather and microfiber makes up the Boreal Diabolo’s below-the-ankle upper. It is built without a liner. Its tongue has a semi-integrated construction which prevents bunching. Around the forefoot is a heavy-duty rand for abrasion protection and extra climbing grip. The randing that reinforces its rear half has enough tension and friction level to grant the user enhanced heel-hooking control. Boreal shoemakers opted to give its heel not one but two pull tabs to make on and off an expedited experience.
Completing the Diabolo’s upper equation is its Velcro closure. It consists of a pair of adjustable straps both furnished with hook-and-loop fasteners.
The Diabolo has a kind of quality that does Boreal proud. As such, it often finds competition in other rock climbing kicks from within the same brand. In this head-to-head, its rival is the Boreal Joker Plus. A number of aspects set these two offerings apart. Such differences will be touched on in the following points.
Asking price. On this front, climbing enthusiasts who prefer budget-friendly rock shoes might side with the Joker Plus. Indeed, this piece is less costly than the Boreal Diabolo by about 30 U.S dollars.
Camber construction. The Boreal Diabolo, as previously discussed (see Profile>Downturn), has a moderate camber. Its competitor, on the other hand, has little-to-no curvature around the toe region, making it a neutral climbing shoe.
Upper. Although both climbing shoes make use of leather and microfiber in their uppers, only the Boreal Joker Plus has a one-piece 3D-printed liner. The Joker Plus also has three adjustable straps, one-upping the Diabolo’s two.
Target audience. The Diabolo climbing shoe is built particularly for the male crowd, and thus only comes in a men’s variant. Its rival, on the other hand, comes in both men and women’s versions.
Outsole technology. Both competing shoes in this comparison are equipped with proprietary Zenith outsoles. That said, the one in the Boreal Joker Plus comes with a technology called Cushioned Heel System. This additional element doubles down on underfoot comfort, making the shoe cushy enough for walking between climbing spots.
Areas of utility. As previously touched on (see Profile>Applications), the Boreal Diabolo is a shoe engineered for slab ascents, bouldering, and sport climbing. The Joker Plus, on the other hand, is a tool crafted specifically for trad climbing. Both rock climbing shoes may be used to scale vertical faces, however.