Composite/Hydronalium Wound.
Infeld Red strings are designed to create a powerful, warm and expansive tone. These strings are excellent for soloists.

Features:

• Advanced synthetic core string.
• Designed to cover the entire tonal spectrum, enabling players to achieve string-by-string tonal preferences.
• Powerful, warn and expansive tone. 
• Excellent for soloists.
• Resistance to excess humidity.
• Quick settling in time.
• Responsiveness to different playing techniques.