#17 those look impossible to skate in, the fact that skates need to be tied snug enough around the ankle to keep the blade perpendicular to ankle to prevent the ankle from bending over and possibly braking
This stuff is much less safe than our modern ones. Its glass bulb contains an extinguishing gas, intended to be thrown at the flames in order to put them out. However, the fumes it releases are extremely toxic for people.
#17 those look impossible to skate in, the fact that skates need to be tied snug enough around the ankle to keep the blade perpendicular to ankle to prevent the ankle from bending over and possibly braking