From the Halfmoon website:
Our Restorative Bolster was designed specifically for the restorative practice or for those tall yogis (>6ft) who benefit from some extra length on their bolster. The rectangular shape promotes a gentle chest opening and subtle back-bending when placing it beneath the spine and lying on your back. This bolster’s generous size and flat stable surface area are designed to perfectly support your entire upper body in restorative yoga poses like Supported Fish and Supported Twist.
This product is part of our Halfmoon Essential Cotton Collection and is made of 100% all-natural cotton fibers that resist shrinking, stretching, and are highly durable. This 100% natural plant-derived fiber is biodegradable, easy-to-clean, and breathable making it a perfect studio-friendly core item. The Essential Cotton Collection is all custom-dyed for Halfmoon specifically, making the colours exclusive to the Halfmoon lineup and core colour stories.