A yoga bolster is a yoga accessory used to support the body while doing poses, intensify practice sessions or facilitate stretching. It is usually made of cotton and looks like a cushion with a removable cover. Yoga bolsters take strain off the body when easing from one pose to another.
Yoga practitioners use different types of bolsters for different purposes. The most common types of yoga bolsters are rectangular and cylindrical bolsters. Rectangular bolsters are used in restorative yoga because their stable form allows for a deeper forward bend and a gentler chest opening. By contrast, cylindrical bolsters provide more support for forward bends and allow the chest to open deeper.