Sidi dragon 4 srs carbon mtb spd shoes megaenter the dragon 4 sidis flagship carbon mtb shoe utilising a carbon sole for optimal weight savings this lightweight stiff mtb shoe is perfectly suited to the competitive mtb rider and those who appreciate a performance ready shoe when they see it this dragon 4 srs carbon composite mega shoe comes with 4mm additional width across the ball of the foot for a more comfortable fit for those with a foot width of ee to eee dragon 4 srs carbon composi