I bought this bolster from Amazon. https://smile.amazon.com/gp/aw/d/B01MT7CY0M/ref=ya_aw_od_pi?ie=UTF8&psc=1 It may be a good choice for you. It's firmer and longer than many of the bolsters I've used in yoga studios. At first I wasn't sure I liked it because it was so firm but now I really do. I use regular throw blankets instead of having bought special yoga blankets.