Carbon fibre in footwear, is nothing new , and is now heavily, used by brands like Nike , especially when it comes to performance running, carbon fibres , have several advantages, including high stiffness, low weight, high chemical resistance, high temperatures tolerance, these properties has made carbon fibre , very popular in aerospace, civil engineering, and military and motor sports,

Vktry has used , this technology, to form a rigid carbon fibre insole , the stiff insole , mimics , a spring like action, that snaps back after being bent , normal insoles are are primarily made of , cellulose paperboard, sometimes spongy , or cushioned foam like material, while holding, them side by side , Vktry feels like a metal plate , while the standard shoe insole, feels like a soft construction paper , carbon fibre , although rigid, promotes , healthier energy transfer, from ground to leg

Pros and cons , cons 1) doesn’t fit any shoe , 2) elevates foot slightly within shoe 3) expensive pros : 1) increases power , speed and explosiveness 2) comfortable3) you really feel the energy return 4) can be used in different shoes

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