Limited-time price for 12 hours ★ Price for 2 sets. New, stored item. The box is slightly crushed. Bontrager inForm BioDynamic ★ MID Arch Insole Yellow Bontrager inForm BioDynamic ★ High Arch Insole Blue EU size 42-43.5 Many cases of fatigue and foot problems during cycling are caused by "collapsed arches." Dedicated insoles restore the foot's skeletal structure to the correct position, reducing knee wobble and excessive twisting, leading to efficient pedaling and injury prevention.