Sidas TFree Trail Running Socks flask over charge/discharge and over heating

over charge/discharge and over heating

and stays balanced when you run

reach for the big gun

Whether you are hitting a winter run or simply commuting in the chill weather

Sidas TFree Trail Running Socks flask over charge/discharge and over heatingDescription T Free Technology for Natural Movement In running, the big toe is crucial for balance, alignment and propulsion. That's why Sidas developed T Free technology in collaboration with athletes such as Jonathan Albon. This technology allows the big toe to move freely and independently, improving your comfort and stability when running. The socks incorporate all the innovations expected for trail running. The left foot right foot anatomical