Riding a bike during snowy days is not the smartest idea. But if that is the only ride available to you, you may have no choice. Thanks to Bike Spikes by Cesar Van Rongen, you can push through snowy conditions and ice on your bike in a safe fashion. These have 6 flexible parts that attach together on to your bike wheel and help you get around. These special winter bicycle tires can be fixed to most city bikes. They could prove useful during winter.