> Not sure if they exist still - bought it on kickstarter. https://fellowproducts.com/products/prismo/ https://fellowproducts.com/products/prismo/ You also do

> Not sure if they exist still - bought it on kickstarter. https://fellowproducts.com/products/prismo/ https://fellowproducts.com/products/prismo/ You also don't have to bother with inverting with this metal filter.