New, simplified version of very popular sports boots TPU & TPR protection for ultimate safety Breathable lining & easy, secure closure system Brand new, highly protective sports boots from the people who brought you the SMX series of boots. These are the new SMX S boots from Alpinestars. They are a stripped down version of the updated SMX-6 V2 boots. They are constructed from a durable microfibre upper, which offers strength as well as comfort and flexibility. A breathable interior liner features anti-slip suede reinforcements at he heel and an ergonomic footbed offers superior comfort and streamlining. The high levels of protection that you expect from the Alpinestars SMX boots feature here as well. A new TPU shin plate was inspired by racers and protects from both impact and abrasion. TPU double density ankle protectors are placed under the outer shell in two positions and an internal toe box helps to protect the more delicate end of your feet.