The Ottinger Yeti is a cut above the rest when it comes to quality thnaks to its german engineering and attention to detail. The durable rubber chasis is super stretchy allowing the pavement crampons to fit all UK sizes from 5 to 11. Under foot the Ottinger Yeti has 4 forefoot spikes and 2 heel spikes, in additon it also has a rugged chain on the forefoot for extra grip and security. The Ottinger Yeti also somes with a handy plastic carry case and a bonus nylon zipped bag with karibiner so the spikes can be carrird on your person ready for action at a moments notice. Leaving nothing to chance Ottinger have also supplied a small bag of spare spikes.