The AligN yoga strap combines the traditional strap design of the legendary BKS Iyengar. Made with unbleached natural cotton webbing and an innovative sure-secure interlocking buckle, this strap will support and enhance your practice. Design & Features: Manduka’s Proprietary Lightweight, yet strong, zinc alloy buckle and improved middle-bar design holds securely and eliminates slipping Based on the original design of BKS Iyengar Provides secure, slip-free support for even the most challenging positions Made from strong, durable, unbleached cotton webbing with non-AZO dyes Lightweight, eco-friendly, and durable Additional Details: For additional information relating to the Manufacturer's Warranty, please contact 1-877-626-3857