Ellas House (? - it's Ella's something, I could be getting confused with some kind baby food thingy..... I know there's an ellas something too!) hemp fleece boosters are great Nice and slim fitting. I find hemp fleece tends to work better for us than hemp jersey, but you can pick up Easy peasy hemp Jersey boosters for about £2 each, and they're not too bad.
Hemp is just as absorbant (more IMO!) than bamboo, and dries much quicker too
it depeands what size you have- we have large and i tend to use a blueberry os insert (microfibre with hemp underneath with an extra hemp booster (usually a swaddlebees) underneath
I use all sorts, I have some BB inserts that I pop and extra peachy cheeks hourglass shaped bamboo insert in, I also use easy peasy with a small bamboo insert on top, PD work well as well. x
Which size? I've found a small P'tits Dessous bamboo insert with a Greenkids hemp booster in the middle to be a great fit in a medium, very absorbent and still pretty trim-fitting. You can put just about anything in a large but guessing your LO isn't in larges yet!