About the D'Addario 50RB00 50mm Eco-Comfort Guitar Strap, Black:
 
The D’Addario Eco Guitar Straps are made with 90% recycled materials. Fashioned from Repreve® high-quality recycled fiber and completed with eco-leather ends, each strap is a big step toward sustainability. Eco-Comfort Straps are also colored using the E-Dye Waterless Color System, which adds beautiful coloration without water — another major stride in environmentally conscious production.